GLSA 201803-02: util-linux: User-assisted execution of arbitrary code
Severity: | high |
Title: | util-linux: User-assisted execution of arbitrary code |
Date: | 03/07/2018 |
Bugs: |
|
ID: | 201803-02 |
Synopsis
A vulnerability was discovered in util-linux, which could potentially lead to the execution of arbitrary code.Background
util-linux is a suite of Linux programs including mount and umount, programs used to mount and unmount filesystems.
Affected packages
Package | Vulnerable | Unaffected | Architecture(s) |
---|---|---|---|
sys-apps/util-linux | < 2.30.2-r1 | >= 2.30.2-r1 | All supported architectures |
Description
It was discovered that the umount bash-completion as provided by util-linux does not escap mount point paths.
Impact
An attacker controlling a volume label could entice a user with privileges to mount/umount filesystems to use umount command with auto completion, possibly resulting in execution of arbitrary code with root privileges.
Workaround
Disable Bash-completion or remove “/usr/share/bash-completion/completions/umount”.
Resolution
All util-linux users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/util-linux-2.30.2-r1"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.