Note:
This project will be discontinued after December 13, 2021. [more]
2018-03-07
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.
Products | Util\-Linux |
Type | Permissions, Privileges, and Access Controls (CWE-264) |
First patch |
https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 |
Relevant file/s | ./bash-completion/umount (modified, +5, -4) |
Links |
• https://bugs.debian.org/892179
• https://github.com/karelzak/util-linux/issues/539 • http://www.securityfocus.com/bid/103367 • https://www.debian.org/security/2018/dsa-4134 |
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