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Debian LTS Advisory ([SECURITY] [DLA 1335-1] zsh security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Two security vulnerabilities were discovered in the Z shell. CVE-2018-1071 Stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service. CVE-2018-1083 Buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.
Affected Software
Affected Software
zsh on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For Debian 7 'Wheezy', these problems have been fixed in version 4.3.17-1+deb7u2. We recommend that you upgrade your zsh packages.