gsd-2021-33624
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-33624",
"description": "In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.",
"id": "GSD-2021-33624",
"references": [
"https://www.suse.com/security/cve/CVE-2021-33624.html",
"https://ubuntu.com/security/CVE-2021-33624",
"https://advisories.mageia.org/CVE-2021-33624.html",
"https://security.archlinux.org/CVE-2021-33624"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-33624"
],
"details": "In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.",
"id": "GSD-2021-33624",
"modified": "2023-12-13T01:23:18.124883Z",
"schema_version": "1.4.0"
}
},
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"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
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"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"lang": "eng",
"value": "In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db."
}
]
},
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},
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"name": "https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner",
"refsource": "MISC",
"url": "https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner"
},
{
"name": "http://www.openwall.com/lists/oss-security/2021/06/21/1",
"refsource": "CONFIRM",
"url": "http://www.openwall.com/lists/oss-security/2021/06/21/1"
},
{
"name": "https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db",
"refsource": "CONFIRM",
"url": "https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db"
},
{
"name": "[debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "5.12.13",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
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}
]
},
"problemtype": {
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"value": "CWE-203"
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"references": {
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},
{
"name": "http://www.openwall.com/lists/oss-security/2021/06/21/1",
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},
{
"name": "https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db",
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{
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"url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html"
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.7,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.4,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-11-12T20:15Z",
"publishedDate": "2021-06-23T16:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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