Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : zsh vulnerabilities (USN-3764-1)

High Nessus Plugin ID 117456

Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

It was discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code.
(CVE-2018-0502, CVE-2018-13259)

Richard Maciel Costa discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-1100).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected zsh package.

Plugin Details

Severity: High

ID: 117456

File Name: ubuntu_USN-3764-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/09/12

Modified: 2018/09/12

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSSv3

Base Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:zsh, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Patch Publication Date: 2018/09/11

Reference Information

CVE: CVE-2018-0502, CVE-2018-1100, CVE-2018-13259

USN: 3764-1