Home/CVE/In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.
CVE

CVE-2017-18206

In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.

In utils.c in zsh before 5.4, symlink expansion had a buffer overflow.

CRITICAL · CVSS 9.8 EPSS 0.00396
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

2
zsh< 5.4
canonical ubuntu linuxall versions
▣

Scoring & Timeline

9.8
CRITICAL · 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:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
suse-csafSUSE-SU-2022:14910-1
suse-csafSUSE-SU-2018:1072-1
rhsaRHSA-2018:3073Low
rhsaRHSA-2018:1932Low
usnUSN-3593-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
https://security.gentoo.org/glsa/201805-10Third Party Advisory
https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6dPatchThird Party Advisory
https://usn.ubuntu.com/3593-1/Third Party Advisory
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