GLSA-200703-03 : ClamAV: Denial of Service

medium Nessus Plugin ID 24751
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

The remote host is affected by the vulnerability described in GLSA-200703-03 (ClamAV: Denial of Service)

An anonymous researcher discovered a file descriptor leak error in the processing of CAB archives and a lack of validation of the 'id' parameter string used to create local files when parsing MIME headers.
Impact :

A remote attacker can send several crafted CAB archives with a zero-length record header that will fill the available file descriptors until no other is available, which will prevent ClamAV from scanning most archives. An attacker can also send an email with specially crafted MIME headers to overwrite local files with the permissions of the user running ClamAV, such as the virus database file, which could prevent ClamAV from detecting any virus.
Workaround :

The first vulnerability can be prevented by refusing any file of type CAB, but there is no known workaround for the second issue.

Solution

All ClamAV users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-antivirus/clamav-0.90'

See Also

https://security.gentoo.org/glsa/200703-03

Plugin Details

Severity: Medium

ID: 24751

File Name: gentoo_GLSA-200703-03.nasl

Version: 1.15

Type: local

Published: 3/2/2007

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:P

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: 3/2/2007

Vulnerability Publication Date: 2/15/2007

Reference Information

CVE: CVE-2007-0897, CVE-2007-0898

GLSA: 200703-03

CWE: 22