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[ GLSA 201201-15 ] ktsuss: Privilege escalation
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PostPosted: Fri Jan 27, 2012 3:26 pm    Post subject: [ GLSA 201201-15 ] ktsuss: Privilege escalation Reply with quote

Gentoo Linux Security Advisory

Title: ktsuss: Privilege escalation (GLSA 201201-15)
Severity: high
Exploitable: local
Date: January 27, 2012
Bug(s): #381115
ID: 201201-15

Synopsis

Two vulnerabilities have been found in ktsuss, allowing local
attackers to gain escalated privileges.


Background

ktsuss is a simple, graphical version of su written in C and GTK+.

Affected Packages

Package: x11-misc/ktsuss
Vulnerable: <= 1.4
Architectures: All supported architectures


Description

Two vulnerabilities have been found in ktuss:
  • Under specific circumstances, ktsuss skips authentication and fails
    to change the effective UID back to the real UID (CVE-2011-2921).
  • The GTK interface spawned by the ktsuss binary is run as root
    (CVE-2011-2922).


Impact

A local attacker could gain escalated privileges and use the
"GTK_MODULES" environment variable to possibly execute arbitrary code
with root privileges.


Workaround

There is no known workaround at this time.

Resolution

Gentoo discontinued support for ktsuss. We recommend that users unmerge
ktsuss:
Code:
# emerge --unmerge "x11-misc/ktsuss"
   


References

CVE-2011-2921
CVE-2011-2922
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