CVE-2021-36084

CVSS V2 Low 2.1 CVSS V3 Low 3.3
Description
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __cil_verify_classpermission and __cil_pre_verify_helper).
Overview
  • CVE ID
  • CVE-2021-36084
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-07-01T03:15:08
  • Last Modified Date
  • 2021-11-17T03:16:27
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:selinux_project:selinux:3.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 3.3
  • Base Severity
  • LOW
  • Exploitability Score
  • 1.8
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065 Exploit Issue Tracking Patch Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-417.yaml Third Party Advisory
https://github.com/SELinuxProject/selinux/commit/f34d3d30c8325e4847a6b696fe7a3936a8a361f3 Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/ Mailing List Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-36084
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36084
History
Created Old Value New Value Data Type Notes
2022-05-10 06:46:38 Added to TrackCVE
2022-12-05 05:18:28 2021-07-01T03:15Z 2021-07-01T03:15:08 CVE Published Date updated
2022-12-05 05:18:28 2021-11-17T03:16:27 CVE Modified Date updated
2022-12-05 05:18:28 Analyzed Vulnerability Status updated