Improper Authentication Affecting kernel-debug-devel package, versions <0:3.10.0-693.el7
Threat Intelligence
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Start learning- Snyk IDSNYK-CENTOS7-KERNELDEBUGDEVEL-2084979
- published26 Jul 2021
- disclosed9 Jan 2017
Introduced: 9 Jan 2017
CVE-2017-5551 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-debug-devel to version 0:3.10.0-693.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.
References
- http://www.securityfocus.com/bid/95717
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31
- https://bugzilla.redhat.com/show_bug.cgi?id=1416126
- https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
- https://access.redhat.com/security/cve/CVE-2017-5551
- http://www.debian.org/security/2017/dsa-3791
- http://www.openwall.com/lists/oss-security/2017/01/21/3
- https://access.redhat.com/errata/RHSA-2017:1842
- http://www.securitytracker.com/id/1038053