Unalz Archive Filename Buffer Overflow Vulnerability

BID:15577

Info

Unalz Archive Filename Buffer Overflow Vulnerability

Bugtraq ID: 15577
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: Nov 28 2005 12:00AM
Updated: Dec 20 2006 11:12PM
Credit: Discovery is credited to Ulf Harnhammar.
Vulnerable: unalz unalz 0.52
unalz unalz 0.51
unalz unalz 0.31
unalz unalz 0.30.1
unalz unalz 0.23
unalz unalz 0.22
unalz unalz 0.5
unalz unalz 0.4
unalz unalz 0.3
unalz unalz 0.2
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Not Vulnerable: unalz unalz 0.53

Discussion

Unalz Archive Filename Buffer Overflow Vulnerability

The 'unalz' utility is prone to a buffer-overflow vulnerability. This issue is exposed when the application extracts an ALZ archive that contains a file with a long name.

An attacker could exploit this vulnerability to execute arbitrary code in the context of the user who extracts a malicious archive.

Exploit / POC

Unalz Archive Filename Buffer Overflow Vulnerability

The following exploit was provided:

Solution / Fix

Unalz Archive Filename Buffer Overflow Vulnerability

Solution:

The vendor has released version 0.53 to address this issue.

Debian has released advisory DSA 959-1 to address this issue. Please see the referenced advisory for more information.


unalz unalz 0.2

unalz unalz 0.22

unalz unalz 0.23

unalz unalz 0.3

unalz unalz 0.30.1

unalz unalz 0.31

unalz unalz 0.4

unalz unalz 0.5

unalz unalz 0.51

unalz unalz 0.52

References

Unalz Archive Filename Buffer Overflow Vulnerability

References:

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