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libgtop: Privilege escalation


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200701-17 / libgtop
Release Date January 23, 2007
Latest Revision January 23, 2007: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
gnome-base/libgtop < 2.14.6 >= 2.14.6 All supported architectures

Related bugreports: #162169


libgtop improperly handles filenames, possibly allowing for the execution of arbitrary code.

2.  Impact Information


libgtop facilitates the libgtop_daemon, which is used by GNOME to obtain information about remote systems.


Liu Qishuai discovered that glibtop_get_proc_map_s() in sysdeps/linux/procmap.c does not properly allocate memory for storing a filename, allowing certain filenames to cause the buffer to overflow on the stack.


By tricking a victim into executing an application that uses the libgtop library (e.g. libgtop_daemon or gnome-system-monitor), a local attacker could specify a specially crafted filename to be used by libgtop causing a buffer overflow and possibly execute arbitrary code with the rights of the user running the application.

3.  Resolution Information


There is no known workaround at this time.


All libgtop users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=gnome-base/libgtop-2.14.6"

4.  References


Page updated January 23, 2007

Summary: This is a Gentoo Linux Security Advisory

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