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CVE-2017-18205

zsh: NULL dereference in cd in sh compatibility mode under given circumstances

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Severity

Low

Red Hat Product Security

2

CVSS 3.0

Review impact separately from score.

Published · June 13, 2017

Updated · November 22, 2025

Description

A NULL pointer dereference flaw was found in the code responsible for the cd builtin command of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 2
CVSS:3.0/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L

CWE-665 · Improper Initialization