[arch-security] [Arch Linux Security Advisory ASA-201411-27] glibc: command execution
rgacogne at archlinux.org
Fri Nov 21 09:39:39 UTC 2014
Arch Linux Security Advisory ASA-201411-27
Date : 2014-11-21
CVE-ID : CVE-2014-7817
Package : glibc
Type : command execution
Remote : No
Link : https://wiki.archlinux.org/index.php/CVE-2014
The package glibc before version 2.20-3 is vulnerable to command execution.
Upgrade to 2.20-3.
# pacman -Syu "glibc>=2.20-3"
The problem has been fixed upstream but there has been no new release yet.
The wordexp function could ignore the WRDE_NOCMD flag under certain
input conditions resulting in the execution of a shell for command
substitution when the application did not request it. The implementation
now checks WRDE_NOCMD immediately before executing the shell and returns
the error WRDE_CMDSUB as expected.
An attacker may be able to force arbitrary commands to be executed by an
application using the wordexp function.
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