NULL pointer dereference in Zsh Project
CVE-2017-18205
In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
References
- sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58 (Patch, Third Party Advisory)
- usn.ubuntu.com/3593-1/ (vendor-advisory)
- security.gentoo.org/glsa/201805-10 (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:3073 (vendor-advisory)
Frequently asked questions
- What is CVE-2017-18205?
- CVE-2017-18205 is a high-severity vulnerability in Zsh Project, classified under NULL Pointer Dereference. CVSS score: 8.1/10. Published 2018-02-27.
- How severe is CVE-2017-18205?
- High severity. CVSS v3 base score is 8.1 out of 10.