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Ubuntu Security Notice USN-3764-1
September 11, 2018
zsh vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
Zsh could be made to execute arbitrary code if it received
a specially crafted script.
Software Description:
– 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 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
After a standard system update you need to restart Zsh to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3764-1
CVE-2018-0502, CVE-2018-1100, CVE-2018-13259
Package Information:
https://launchpad.net/ubuntu/+source/zsh/5.4.2-3ubuntu3.1
https://launchpad.net/ubuntu/+source/zsh/5.1.1-1ubuntu2.3
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