Improper Input Validation Affecting zsh package, versions <5.4.2-3ubuntu3.1
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-UBUNTU1804-ZSH-351935
- published25 Sept 2018
- disclosed5 Sept 2018
Introduced: 5 Sep 2018
CVE-2018-13259 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 zsh to version 5.4.2-3ubuntu3.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream zsh package and not the zsh package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
An issue was discovered in zsh before 5.6. Shebang lines exceeding 64 characters were truncated, potentially leading to an execve call to a program name that is a substring of the intended one.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-13259
- https://bugs.debian.org/908000
- https://security-tracker.debian.org/tracker/CVE-2018-13259
- https://security.gentoo.org/glsa/201903-02
- https://sourceforge.net/p/zsh/code/ci/1c4c7b6a4d17294df028322b70c53803a402233d
- https://www.zsh.org/mla/zsh-announce/136
- https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
- https://access.redhat.com/errata/RHSA-2019:2017
- https://usn.ubuntu.com/3764-1/