unalz .alz archive buffer overflow
| unalz-alz-archive-bo (23267) |  High Risk |
Description:
unalz is vulnerable to a buffer overflow, caused by improper validation of .alz file names. By creating a .alz archive containing a file with a specially-crafted file name, a remote attacker could overflow a buffer and execute arbitrary code on the system, once the victim extracts the malicious archive.
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of unalz (0.53 or later), available from the unalz Web page. See References.
For Debian GNU/Linux:
Refer to DSA-959-1 for patch, upgrade, or suggested workaround information. See References.
References:
- Debian Bug report logs - #340842: unalz: buffer overflow when extracting archives.
- unalz Web page: unalz.
- BID-15577: Unalz Archive Filename Buffer Overflow Vulnerability
- CVE-2005-3862: Buffer overflow in unalz before 0.53 allows remote attackers to execute arbitrary code via long file names in ALZ archives.
- DSA-959: unalz -- buffer overflow
- OSVDB ID: 21160: unalz Archive Extraction Filename Overflow
- SA17774: unalz Filename Handling Buffer Overflow Vulnerability
- VUPEN/ADV-2005-2604: unalz alz Archive Handling Client-Side Buffer Overflow Vulnerability
Platforms Affected:
- Debian Debian Linux 3.1
- kipple.pe.kr unalz 0.52-1
Reported:
Nov 26, 2005
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For corrections or additions please email xforce@iss.net