Veracode Vulnerability DatabaseVERACODE:33227Denial Of Service (DoS)
3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
libsepol is vulnerable to denial of service. The CIL compiler in SELinux 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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| libsepol | eq | 2.9__1.el8 | |
| libsepol | eq | 2.8__2.el8 | |
| libsepol | eq | 2.9__2.el8 | |
| libsepol | eq | 2.9__1.el8 | |
| libsepol | eq | 2.8__2.el8 | |
| libsepol | eq | 2.9__2.el8 |
References
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
access.redhat.com/errata/RHSA-2021:4513
access.redhat.com/security/updates/classification/#moderate
bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675
bugzilla.redhat.com/show_bug.cgi?id=1979668
github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-585.yaml
github.com/SELinuxProject/selinux/commit/340f0eb7f3673e8aacaf0a96cbfcd4d12a405521
lists.fedoraproject.org/archives/list/[email protected]/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
lore.kernel.org/selinux/CAEN2sdqJKHvDzPnxS-J8grU8fSf32DDtx=kyh84OsCq_Vm+yaQ@mail.gmail.com/T/
Related
3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P