SB2017020671 - Improper privilege management in Linux kernel fs
Published: February 6, 2017
Security Bulletin ID
SB2017020671
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper privilege management (CVE-ID: CVE-2017-5551)
The vulnerability allows a local user to read and manipulate data.
The vulnerability exists due to improperly imposed permissions within the simple_set_acl() function in fs/posix_acl.c. A local user can read and manipulate data.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31
- http://www.debian.org/security/2017/dsa-3791
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
- http://www.openwall.com/lists/oss-security/2017/01/21/3
- http://www.securityfocus.com/bid/95717
- http://www.securitytracker.com/id/1038053
- https://bugzilla.redhat.com/show_bug.cgi?id=1416126
- https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31