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

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-RHEL7-KERNEL-4770855
  • published 26 Jul 2021
  • disclosed 9 Jan 2017
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Introduced: 9 Jan 2017

CVE-2017-5551 Open this link in a new tab
CWE-287 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel 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 package and not the kernel 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.