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AUSCERT External Security Bulletin Redistribution
12 September 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
CVE Names: CVE-2018-13259 CVE-2018-1100 CVE-2018-0502
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USN-3764-1: Zsh vulnerabilities
11 September 2018
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Zsh could be made to execute arbitrary code if it received a specially crafted
o zsh - shell with lots of features
It was discovered that Zsh incorrectly handled certain scripts. An attacker
could possibly use this issue to execute arbitrary code. (CVE-2018-0502,
Richard Maciel Costa discovered that Zsh incorrectly handled certain scripts.
An attacker could possibly use this issue to execute arbitrary code.
The problem can be corrected by updating your system to the following package
Ubuntu 18.04 LTS
zsh - 5.4.2-3ubuntu3.1
Ubuntu 16.04 LTS
zsh - 5.1.1-1ubuntu2.3
Ubuntu 14.04 LTS
zsh - 5.0.2-3ubuntu6.3
To update your system, please follow these instructions:
After a standard system update you need to restart Zsh to make all the
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