Action not permitted
Modal body text goes here.
Modal Title
Modal Body
GHSA-537H-RV9Q-VVPH
Vulnerability from github – Published: 2021-03-24 18:24 – Updated: 2024-10-21 21:54
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "rsa"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-13757"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-24T18:24:28Z",
"nvd_published_at": "2020-06-01T19:15:00Z",
"severity": "HIGH"
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "GHSA-537h-rv9q-vvph",
"modified": "2024-10-21T21:54:27Z",
"published": "2021-03-24T18:24:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS"
}
BREW-ANSIBLE@10-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@10",
"purl": "pkg:brew/ansible%4010"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.7.0_6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-ansible@10-CVE-2020-13757",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-ANSIBLE@12-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@12",
"purl": "pkg:brew/ansible%4012"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-ansible@12-CVE-2020-13757",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-ANSIBLE@9-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:35 – Updated: 2026-09-09 23:41 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@9",
"purl": "pkg:brew/ansible%409"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.13.0_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-ansible@9-CVE-2020-13757",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-AWS-SHELL-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:42 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.7.2",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "aws-shell",
"purl": "pkg:brew/aws-shell"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.2.2_15"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.7.2",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.7.2"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-aws-shell-CVE-2020-13757",
"modified": "2026-09-09T23:42:43Z",
"published": "2026-08-13T16:37:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-AWSCLI@1-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:37 – Updated: 2026-09-09 23:42 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.7.2",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "awscli@1",
"purl": "pkg:brew/awscli%401"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.46.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.7.2",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.7.2"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-awscli@1-CVE-2020-13757",
"modified": "2026-09-09T23:42:43Z",
"published": "2026-08-13T16:37:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-CVE-BIN-TOOL-CVE-20… (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:42 – Updated: 2026-09-10 19:04 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.7.2",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "cve-bin-tool",
"purl": "pkg:brew/cve-bin-tool"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.7.2",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.7.2"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-cve-bin-tool-CVE-2020-13757",
"modified": "2026-09-10T19:04:07Z",
"published": "2026-08-13T16:42:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-DUPLICITY-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:44 – Updated: 2026-09-09 23:52 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "duplicity",
"purl": "pkg:brew/duplicity"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.0_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-duplicity-CVE-2020-13757",
"modified": "2026-09-09T23:52:34Z",
"published": "2026-08-13T16:44:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-DVC-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:44 – Updated: 2026-09-09 23:52 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "dvc",
"purl": "pkg:brew/dvc"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.67.1_14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-dvc-CVE-2020-13757",
"modified": "2026-09-09T23:52:57Z",
"published": "2026-08-13T16:44:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-GLANCES-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:51 – Updated: 2026-09-10 19:18 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "glances",
"purl": "pkg:brew/glances"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-glances-CVE-2020-13757",
"modified": "2026-09-10T19:18:35Z",
"published": "2026-08-13T16:51:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
BREW-GYB-CVE-2020-13757 (GHSA-537H-RV9Q-VVPH)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:55 – Updated: 2026-09-10 00:06 – Source website
VLAI
Summary
Python-RSA decryption of ciphertext leads to DoS
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Severity
7.5 (High)
References
| URL | Type | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "rsa",
"resource_purl": "pkg:pypi/rsa@4.9.1",
"upstream_fixed_in": "4.1"
},
"package": {
"ecosystem": "Homebrew",
"name": "gyb",
"purl": "pkg:brew/gyb"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.95"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/rsa@4.9.1",
"name": "rsa",
"resource": "rsa",
"strategy": "registry",
"subject_version": "4.9.1"
}
]
},
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "BREW-gyb-CVE-2020-13757",
"modified": "2026-09-10T00:06:35Z",
"published": "2026-08-13T16:55:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"type": "WEB",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-99.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sybrenstuvel/python-rsa"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4478-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Python-RSA decryption of ciphertext leads to DoS",
"upstream": [
"GHSA-537h-rv9q-vvph",
"CVE-2020-13757",
"PYSEC-2020-99"
]
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…
Loading…