unarj file name buffer overflow
| unarj-longfilename-bo (18044) |  High Risk |
Description:
unarj is vulnerable to a buffer overflow, caused by improper bounds checking of user-supplied input. By sending a specially-crafted long file name, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the system to crash, once processed by unarj.
Platforms Affected:
- Debian, Debian Linux 3.0
- Gentoo, Linux
- Microsoft, Windows 95
- Microsoft, Windows 98
- RedHat, Enterprise Linux 2.1 AS
- RedHat, Enterprise Linux 2.1 ES
- RedHat, Enterprise Linux 2.1 WS
- RedHat, Linux Advanced Workstation 2.1 Itanium
- Robert K Jung, unarj 2.43-3
- Robert K Jung, unarj 2.63a
- SuSE, SuSE Linux
Remedy:
For Gentoo Linux:
Upgrade to the latest version of unarj (2.63a-r2 or later), as listed in GLSA 200411-29. See References.
For SUSE Linux:
Apply the appropriate fixed packages via the SUSE FTP server or the YaST Online Update, as listed in SUSE Security Summary Report SUSE-SR:2004:003. See References.
For Debian GNU/Linux 3.0(woody):
Upgrade to the latest version of unarj (2.43-3woody1 or later), as listed in DSA-652-1. See References.
For Red Hat Linux:
Refer to RHSA-2005:007-05 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- ARJ Software Web site, ARJ Software at http://www.arjsoftware.com.
- BID-11665: ARJ Software UNARJ Remote Buffer Overflow Vulnerability
- CVE-2004-0947: Buffer overflow in unarj before 2.63a-r2 allows remote attackers to execute arbitrary code via an arj archive that contains long filenames.
- DSA-652: unarj -- several vulnerabilities
- GLSA-200411-29: unarj: Long filenames buffer overflow and a path traversal vulnerability
- RHSA-2005-007: unarj security update
- SUSE-SR:2004:003: SUSE Security Summary Report
Reported:
Nov 11, 2004
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