Vulnerability Details : 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.
Vulnerability category: Memory Corruption
Products affected by CVE-2017-18205
- cpe:2.3:a:zsh_project:zsh:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-18205
0.36%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 69 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-18205
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.1
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
NIST |
CWE ids for CVE-2017-18205
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-18205
-
https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58
zsh / Code / Commit [eb7837]Patch;Third Party Advisory
-
https://usn.ubuntu.com/3593-1/
USN-3593-1: Zsh vulnerabilities | Ubuntu security notices
-
https://security.gentoo.org/glsa/201805-10
Zsh: Multiple vulnerabilities (GLSA 201805-10) — Gentoo security
-
https://access.redhat.com/errata/RHSA-2018:3073
RHSA-2018:3073 - Security Advisory - Red Hat Customer Portal
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