GLSA-200411-29 : unarj: Long filenames buffer overflow and a path traversal vulnerability

Critical Nessus Plugin ID 15777


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200411-29 (unarj: Long filenames buffer overflow and a path traversal vulnerability)

unarj has a bounds checking vulnerability within the handling of long filenames in archives. It also fails to properly sanitize paths when extracting an archive (if the 'x' option is used to preserve paths).
Impact :

An attacker could trigger a buffer overflow or a path traversal by enticing a user to open an archive containing specially crafted path names, potentially resulting in the overwrite of files or execution of arbitrary code with the permissions of the user running unarj.
Workaround :

There is no known workaround at this time.


All unarj users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-arch/unarj-2.63a-r2'

See Also

Plugin Details

Severity: Critical

ID: 15777

File Name: gentoo_GLSA-200411-29.nasl

Version: $Revision: 1.15 $

Type: local

Published: 2004/11/22

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:unarj, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2004/11/19

Vulnerability Publication Date: 2004/10/12

Reference Information

CVE: CVE-2004-0947, CVE-2004-1027

OSVDB: 10788, 11695

GLSA: 200411-29