CVE-2017-5551 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  4.4 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31 Issue Tracking  Patch  Third Party Advisory 
http://www.debian.org/security/2017/dsa-3791
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6 Release Notes  Vendor Advisory 
http://www.openwall.com/lists/oss-security/2017/01/21/3 Mailing List  Patch  Third Party Advisory 
http://www.securityfocus.com/bid/95717 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1038053
https://bugzilla.redhat.com/show_bug.cgi?id=1416126 Issue Tracking  Patch 
https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31 Issue Tracking  Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-5551
NVD Published Date:
02/06/2017
NVD Last Modified:
10/02/2019
Source:
MITRE