Home/CVE/In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processin
CVE

CVE-2017-18205

In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processin

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.

HIGH · CVSS 8.1 EPSS 0.00671
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

1
zsh project zsh< 5.4
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Feb 2018 · 10:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

4
suse-csafSUSE-SU-2022:14910-1
suse-csafSUSE-SU-2018:1072-1
rhsaRHSA-2018:3073Low
usnUSN-3593-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.gentoo.org/glsa/201805-10
https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58PatchThird Party Advisory
https://usn.ubuntu.com/3593-1/
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