Race Condition Affecting libmount package, versions <0:2.23.2-33.28.amzn1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Sept 2021
- disclosed27 Jul 2018
Introduced: 27 Jul 2018
CVE-2017-2616 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 libmount to version 0:2.23.2-33.28.amzn1 or higher.
This issue was patched in ALAS-2017-823.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libmount package and not the libmount package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
A race condition was found in util-linux before 2.32.1 in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions.
References
- http://www.securityfocus.com/bid/96404
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2616
- https://github.com/karelzak/util-linux/commit/dffab154d29a288aa171ff50263ecc8f2e14a891
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2616
- https://www.debian.org/security/2017/dsa-3793
- https://security.gentoo.org/glsa/201706-02
- http://rhn.redhat.com/errata/RHSA-2017-0654.html
- https://access.redhat.com/errata/RHSA-2017:0907
- http://www.securitytracker.com/id/1038271