Improper input validation in Zsh
CVE-2018-0502
An issue was discovered in zsh before 5.6. The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.025 (83.0th percentile) — read the EPSS interpretation.
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.
Affected products
- Zsh
- Canonical Ubuntu_linux — versions 14.04, 16.04, 18.04
- N/a Zsh Before 5.6 — versions zsh before 5.6
Weakness classification (CWE)
References
- security@debian.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- security@debian.org (Patch, Third Party Advisory, x_refsource_MISC)
- security@debian.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@debian.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@debian.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2018-0502?
- CVE-2018-0502 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-2018-0502?
- Critical severity. CVSS v3 base score is 9.8 out of 10.