Improper input validation in Zsh
CVE-2018-13259
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Zsh
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Zsh Before 5.6 — versions zsh before 5.6
Weakness classification (CWE)
References
- bugs.debian.org/908000 (Patch, Mailing List, Third Party Advisory)
- sourceforge.net/p/zsh/code/ci/1c4c7b6a4d17294df028322b70c53803a402233d (Patch, Third Party Advisory)
- www.zsh.org/mla/zsh-announce/136 (Mailing List, Release Notes, Vendor Advisory)
- usn.ubuntu.com/3764-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201903-02 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2017 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/12/msg00000.html (mailing-list)
Frequently asked questions
- What is CVE-2018-13259?
- CVE-2018-13259 is a critical-severity vulnerability in Zsh, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2018-09-05.
- How severe is CVE-2018-13259?
- Critical severity. CVSS v3 base score is 9.8 out of 10.