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Improper Authentication Affecting kernel-bootwrapper package, versions <0:3.10.0-693.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELBOOTWRAPPER-4771076
  • published26 Jul 2021
  • disclosed9 Jan 2017
Report a new vulnerability Found a mistake?

Introduced: 9 Jan 2017

CVE-2017-5551  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-693.el7 or higher.
This issue was patched in RHSA-2017:1842.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL. See How to fix? for RHEL: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.