USN-3764-1: Zsh vulnerabilities

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

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)

Update instructions

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

Ubuntu 18.04

• zsh - 5.4.2-3ubuntu3.1

Ubuntu 16.04

• zsh - 5.1.1-1ubuntu2.3

Ubuntu 14.04

• zsh - 5.0.2-3ubuntu6.3

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

References

• CVE-2018-0502
• CVE-2018-1100
• CVE-2018-13259