GLSA-200706-05 : ClamAV: Multiple Denials of Service

Critical Nessus Plugin ID 25534


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


The remote host is affected by the vulnerability described in GLSA-200706-05 (ClamAV: Multiple Denials of Service)

Several vulnerabilities were discovered in ClamAV by various researchers:
Victor Stinner (INL) discovered that the OLE2 parser may enter in an infinite loop (CVE-2007-2650).
A boundary error was also reported by an anonymous researcher in the file unsp.c, which might lead to a buffer overflow (CVE-2007-3023).
The file unrar.c contains a heap-based buffer overflow via a modified vm_codesize value from a RAR file (CVE-2007-3123).
The RAR parsing engine can be bypassed via a RAR file with a header flag value of 10 (CVE-2007-3122).
The cli_gentempstream() function from clamdscan creates temporary files with insecure permissions (CVE-2007-3024).
Impact :

A remote attacker could send a specially crafted file to the scanner, possibly triggering one of the vulnerabilities. The two buffer overflows are reported to only cause Denial of Service. This would lead to a Denial of Service by CPU consumption or a crash of the scanner.
The insecure temporary file creation vulnerability could be used by a local user to access sensitive data.
Workaround :

There is no known workaround at this time.


All ClamAV users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-antivirus/clamav-0.90.3'

See Also

Plugin Details

Severity: Critical

ID: 25534

File Name: gentoo_GLSA-200706-05.nasl

Version: $Revision: 1.12 $

Type: local

Published: 2007/06/18

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:clamav, cpe:/o:gentoo:linux

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

Patch Publication Date: 2007/06/15

Vulnerability Publication Date: 2007/04/18

Reference Information

CVE: CVE-2007-2650, CVE-2007-3023, CVE-2007-3024, CVE-2007-3122, CVE-2007-3123

OSVDB: 34915, 35522, 36908, 45392

GLSA: 200706-05