CVE-2014-8989 | Date: (C)2014-12-09 (M)2024-05-04 |
The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other category, aka a "negative groups" issue, related to kernel/groups.c, kernel/uid16.c, and kernel/user_namespace.c.
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V2 Severity: |
CVSS Score : 4.6 |
Exploit Score: 3.9 |
Impact Score: 6.4 |
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CVSS V2 Metrics: |
Access Vector: LOCAL |
Access Complexity: LOW |
Authentication: NONE |
Confidentiality: PARTIAL |
Integrity: PARTIAL |
Availability: PARTIAL |
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