XBlockOut XBL Display Local Buffer Overrun Vulnerability

BID:8145

Info

XBlockOut XBL Display Local Buffer Overrun Vulnerability

Bugtraq ID: 8145
Class: Boundary Condition Error
CVE: CVE-2003-0535
Remote: No
Local: Yes
Published: Jul 09 2003 12:00AM
Updated: Jul 11 2009 10:56PM
Credit: This issue was announced in a Debian advisory.
Vulnerable: XBlockOut xbl 1.1
XBlockOut xbl 1.0 k
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
XBlockOut xbl 1.0 i
+ Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 IA-32
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
 + Debian Linux 2.2
Not Vulnerable: XBlockOut xbl 1.1.1

Discussion

XBlockOut XBL Display Local Buffer Overrun Vulnerability

XBL is prone to a locally exploitable buffer overrun condition. This is due to insufficient bounds checking of command line options and could permit code to executed with elevated privileges. xbl is typically installed setgid 'games'.

Exploit / POC

XBlockOut XBL Display Local Buffer Overrun Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

XBlockOut XBL Display Local Buffer Overrun Vulnerability

Solution:
Debian has released an advisory (DSA 345-1) that addresses this issue. Please see the attached advisory for details on obtaining and applying fixes.

The vendor has addressed this issue in xbl 1.1.1.


XBlockOut xbl 1.0 i

XBlockOut xbl 1.0 k

XBlockOut xbl 1.1

References

XBlockOut XBL Display Local Buffer Overrun Vulnerability

References:

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