1. Ubuntu Security Notices
  2. USN-3764-1

USN-3764-1: Zsh vulnerabilities

Publication date

11 September 2018

Overview

Zsh could be made to execute arbitrary code if it received a specially crafted script.

Releases

Packages

  • zsh - shell with lots of features

Details

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)

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)

Update instructions

After a standard system update you need to restart Zsh to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 bionic zsh –  5.4.2-3ubuntu3.1
16.04 xenial zsh –  5.1.1-1ubuntu2.3
14.04 trusty zsh –  5.0.2-3ubuntu6.3

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References

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