[USN-3608-1] Zsh vulnerabilities

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[USN-3608-1] Zsh vulnerabilities

Leonidas S. Barbosa
Ubuntu Security Notice USN-3608-1
March 27, 2018

zsh vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS


Several security issues were fixed in Zsh.

Software Description:
- zsh: shell with lots of features


Richard Maciel Costa discovered that Zsh incorrectly handled certain
inputs. An attacker could possibly use this to cause a denial of
service. (CVE-2018-1071)

It was discovered that Zsh incorrectly handled certain files. An
attacker could possibly use this to execute arbitrary code. 

Update instructions:

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

Ubuntu 17.10:
  zsh                             5.2-5ubuntu1.2

Ubuntu 16.04 LTS:
  zsh                             5.1.1-1ubuntu2.2

Ubuntu 14.04 LTS:
  zsh                             5.0.2-3ubuntu6.2

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

  CVE-2018-1071, CVE-2018-1083

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