Buffer Overflow Affecting zsh package, versions <0:4.3.11-8.el6
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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Test your applications- Snyk IDSNYK-RHEL6-ZSH-1519425
- published26 Jul 2021
- disclosed9 May 2017
Introduced: 9 May 2017
CVE-2017-18206 (opens in a new tab)How to fix?
Upgrade RHEL:6 zsh to version 0:4.3.11-8.el6 or higher.
This issue was patched in RHSA-2018:1932.
NVD Description
Note: Versions mentioned in the description apply only to the upstream zsh package and not the zsh package as distributed by RHEL.
See How to fix? for RHEL:6 relevant fixed versions and status.
In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.
References
- https://access.redhat.com/security/cve/CVE-2017-18206
- https://security.gentoo.org/glsa/201805-10
- https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6d
- https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
- https://access.redhat.com/errata/RHSA-2018:1932
- https://usn.ubuntu.com/3593-1/