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CVE-2017-5551
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
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..
CVSSv2.0 Score
- Severity
- Low
- Base Score
- 3.6/10
- Exploit Score
- 3.9/10
- Access Vector
- Local
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 4.9/10
- Confidentiality Impact
- Partial
- Availability Impact
- None
- Integrity Impact
- Partial
CVSSv3.1 Score
- Severity
- Medium
- Base Score
- 4.4/10
- Exploit Score
- 1.8/10
- Access Vector
- Local
- Access Complexity
- Low
- Privileges Required
- Low
- Impact Score
- 2.5/10
- Confidentiality Impact
- Low
- Availability Impact
- None
- Integrity Impact
- Low
- Scope
- Unchanged
- User Interaction
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31
- https://bugzilla.redhat.com/show_bug.cgi?id=1416126
- http://www.openwall.com/lists/oss-security/2017/01/21/3
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c141
- http://www.securityfocus.com/bid/95717
- http://www.securitytracker.com/id/1038053
- http://www.debian.org/security/2017/dsa-3791