CVE-2017-18205
8.1
HIGH
CVSS 3.1
EPSS 0.67%
Description
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.
How to fix CVE-2017-18205
To remediate CVE-2017-18205, upgrade the affected package to a fixed version below.
- Debian/zsh—upgrade to 5.4.1-1 or later
Is CVE-2017-18205 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 5.4.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |