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OS Command Injection Affecting libblkid package, versions <0:2.30.2-2.amzn2.0.9

0.0
medium

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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SUSE
8.2 high
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Red Hat
6.7 medium

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  • Snyk ID SNYK-AMZN2-LIBBLKID-3159952
  • published 7 Dec 2022
  • disclosed 7 Mar 2018
Report a new vulnerability Found a mistake?

Introduced: 7 Mar 2018

CVE-2018-7738 Open this link in a new tab
CWE-78 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libblkid to version 0:2.30.2-2.amzn2.0.9 or higher.
This issue was patched in ALAS2-2022-1878.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libblkid package and not the libblkid package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.