CVE-2021-36087

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Summary

CVECVE-2021-36087
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-01 03:15:00 UTC
Updated2023-11-07 03:36:00 UTC
DescriptionThe CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.

Risk And Classification

Problem Types: CWE-125

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 35 All All All
Operating System Selinux Project Selinux 3.2 All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 35 Update: libsepol-3.3-2.fc35 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
secilc/docs: Update the CIL documentation for various blocks · SELinuxProject/selinux@bad0a74 · GitHub MISC github.com
oss-fuzz-vulns/OSV-2021-585.yaml at main · google/oss-fuzz-vulns · GitHub MISC github.com
libsepol/cil: Check for statements not allowed in optional blocks · SELinuxProject/selinux@340f0eb · GitHub MISC github.com
libsepol CVE patch issue lore.kernel.org
[SECURITY] Fedora 35 Update: libsepol-3.3-2.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
libsepol CVE patch issue MISC lore.kernel.org
32675 - oss-fuzz - OSS-Fuzz: Fuzzing the planet - Monorail MISC bugs.chromium.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159521 Oracle Enterprise Linux Security Update for libsepol (ELSA-2021-4513)
  • 183120 Debian Security Update for libsepol (CVE-2021-36087)
  • 198754 Ubuntu Security Notification for libsepol Vulnerabilities (USN-5391-1)
  • 239808 Red Hat Update for libsepol (RHSA-2021:4513)
  • 282153 Fedora Security Update for libsepol (FEDORA-2021-67efe88c29)
  • 354312 Amazon Linux Security Advisory for libsepol : ALAS2022-2022-030
  • 354524 Amazon Linux Security Advisory for libsepol : ALAS2022-2022-170
  • 354704 Amazon Linux Security Advisory for libsepol : ALAS2022-2022-208
  • 355129 Amazon Linux Security Advisory for libsepol : ALAS2023-2023-017
  • 356236 Amazon Linux Security Advisory for libsepol : ALASSELINUX-NG-2023-001
  • 356437 Amazon Linux Security Advisory for libsepol : ALAS2-2023-2307
  • 356590 Amazon Linux Security Advisory for libsepol : ALAS2SELINUX-NG-2023-001
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 671274 EulerOS Security Update for libsepol (EulerOS-SA-2022-1245)
  • 671334 EulerOS Security Update for libsepol (EulerOS-SA-2022-1257)
  • 671370 EulerOS Security Update for libsepol (EulerOS-SA-2022-1309)
  • 671373 EulerOS Security Update for libsepol (EulerOS-SA-2022-1293)
  • 940148 AlmaLinux Security Update for libsepol (ALSA-2021:4513)
  • 960253 Rocky Linux Security Update for libsepol (RLSA-2021:4513)
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