CVE-2017-18205 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://access.redhat.com/errata/RHSA-2018:3073 https://security.gentoo.org/glsa/201805-10 https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58 https://usn.ubuntu.com/3593-1/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1