CVE-2005-3862

unalz - Buffer Overflow via Long File Names in ALZ Archives

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2005-3862. PoCs published by Ulf Harnhammar.

AI-analyzed exploit summary This Perl script generates a malicious ALZ archive with an overly long filename to trigger a buffer overflow in the 'unalz' utility. The exploit leverages the vulnerability to potentially execute arbitrary code when the archive is extracted.

Description

Buffer overflow in unalz before 0.53 allows remote attackers to execute arbitrary code via long file names in ALZ archives.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Ulf Harnhammar · perldoslinux
https://www.exploit-db.com/exploits/26601

This Perl script generates a malicious ALZ archive with an overly long filename to trigger a buffer overflow in the 'unalz' utility. The exploit leverages the vulnerability to potentially execute arbitrary code when the archive is extracted.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: unalz utility (version not specified)
No auth needed
Prerequisites: Perl interpreter · Ability to deliver the malicious ALZ archive to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (9)

Core 9
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/21160
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2005/2604
Exploit, Patch vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/15577
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/18665
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/17774
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/23267
Various Sources x_refsource_confirm
http://www.kipple.pe.kr/win/unalz/
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2006/dsa-959

Scores

EPSS 0.2044
EPSS Percentile 97.2%

Details

Status published
Products (9)
unalz/unalz 0.2
unalz/unalz 0.3
unalz/unalz 0.4
unalz/unalz 0.5
unalz/unalz 0.22
unalz/unalz 0.23
unalz/unalz 0.31
unalz/unalz 0.51
unalz/unalz 0.52
Published Nov 29, 2005
Tracked Since Feb 18, 2026