Title: Util-Linux Login Pam Privilege Elevation Vulnerability
Severity: MODERATE
Description:
util-linux is a freely available, open source software package that provides some implementations of standard UNIX utilities, such as login.
A problem in the package could allow a local user to gain elevated privileges. This is due to unpredicted interaction with the PAM utilities.
It is possible for a user to log into a system, and gain elevated privileges at login. When the number of users of a certain group are being limited via the pam_limits module, and access the system via a utility that uses login, the user may be granted arbitrary rights.
This makes it possible for a user with legitimate access to the system to gain elevated privileges, and potentially access sensitive information or programs. The user could gain the rights of console, or potentially pts/0 rights.
Affected Products:
- Andries Brouwer util-linux 2.10.0s
- Andries Brouwer util-linux 2.11.0f
- Andries Brouwer util-linux 2.11.0h
- Andries Brouwer util-linux 2.11.0i
- Andries Brouwer util-linux 2.11.0k
- Andries Brouwer util-linux 2.11.0l
- MandrakeSoft Linux Mandrake 8.0.0
- MandrakeSoft Linux Mandrake 8.0.0 ppc
- MandrakeSoft Linux Mandrake 8.1.0
- RedHat Linux 6.2.0
- RedHat Linux 7.0.0
- RedHat Linux 7.1.0
- RedHat util-linux-2.10s-12.i386.rpm 0.0.0
References:
- RedHat: Bugzilla bug 51646
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