PT-2018-6734 · Zsh+5 · Zsh+5

Peter Stephenson · Published 2017-09-04 · Updated 2022-03-14 · CVE-2017-18205

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: zsh versions prior to 5.4

Description: The issue occurs in sh compatibility mode when processing the cd command without an argument if the HOME variable is not set, resulting in a NULL pointer dereference.

Recommendations: For versions prior to 5.4, update to version 5.4 or later to resolve the issue. As a temporary workaround, consider setting the HOME variable before using the cd command in sh compatibility mode.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2017-2148

CESA-2018_3073

CVE-2017-18205

MGASA-2018-0168

OPENSUSE-SU-2018_1093-1

RHSA-2018:3073

RHSA-2018_3073

SUSE-SU-2018:1072-1

SUSE-SU-2022:14910-1

SUSE-SU-2022_14910-1

USN-3593-1

Affected Products

Alt Linux

Centos

Red Hat

Suse

Ubuntu

Zsh

References · 52

• https://ubuntu.com/security/CVE-2017-18206 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0168 · Vendor Advisory
• https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2017-18205 · Security Note
• https://ubuntu.com/security/CVE-2014-10071 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7549 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-18205 · Security Note
• https://security.gentoo.org/glsa/201805-10 · Vendor Advisory
• https://usn.ubuntu.com/3593-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7548 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1072-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2014-10070 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3593-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-10714 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3593-1 · Vendor Advisory