Vulmon
Amazon Linux 2 Security Advisory: ALAS-2023-2307
Advisory Release Date: 2023-10-12 15:09 Pacific
Advisory Updated Date: 2023-10-19 23:41 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
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). (CVE-2021-36084)
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map). (CVE-2021-36085)
The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list). (CVE-2021-36086)
The 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. (CVE-2021-36087)
Affected Packages:
libsepol
Issue Correction:
Run yum update libsepol to update your system.
aarch64:
libsepol-2.5-10.amzn2.0.1.aarch64
libsepol-devel-2.5-10.amzn2.0.1.aarch64
libsepol-static-2.5-10.amzn2.0.1.aarch64
libsepol-debuginfo-2.5-10.amzn2.0.1.aarch64
i686:
libsepol-2.5-10.amzn2.0.1.i686
libsepol-devel-2.5-10.amzn2.0.1.i686
libsepol-static-2.5-10.amzn2.0.1.i686
libsepol-debuginfo-2.5-10.amzn2.0.1.i686
src:
libsepol-2.5-10.amzn2.0.1.src
x86_64:
libsepol-2.5-10.amzn2.0.1.x86_64
libsepol-devel-2.5-10.amzn2.0.1.x86_64
libsepol-static-2.5-10.amzn2.0.1.x86_64
libsepol-debuginfo-2.5-10.amzn2.0.1.x86_64