Clam AntiVirus Freshclam HTTP buffer overflow
| clamav-freshclam-http-bo (26182) |  High Risk |
Description:
Clam AntiVirus is vulnerable to a stack-based buffer overflow in the Freshclam command line utility. By sending an overly long HTTP header to the Freshclam HTTP client, a remote attacker in control of a malicious Web server could overflow a buffer and execute arbitrary code on a victim's system or cause the application to crash.
Note: In order to exploit this vulnerability, the attacker would need to persuade a victim to connect to a malicious ClamAV mirror to receive virus updates.
Platforms Affected:
- Clam Anti-Virus, ClamAV 0.80 - 0.88.1
- Debian, Debian Linux 3.1
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 2006 X86_64
- MandrakeSoft, Mandrake Linux 2006
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux LE2005 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- SuSE, SuSE Linux 9.1
- SuSE, SuSE Linux 9.2
- SuSE, SuSE Linux 9.3
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of Clam AntiVirus (0.88.2 or later), available from SourceForge.net. See References.
For Debian GNU/Linux:
Refer to DSA-1050-1 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-05-03 for patch, upgrade, or suggested workaround information. See References.
For Apple Mac OS X:
Apply the Mac OS X 10.4.7 Update, available from the Apple Web site. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
Consequences:
Gain Access
References:
- Apple Security-Announce Mailing List, Tue, 27 Jun 2006 13:16:56 -0700, APPLE-SA-2006-06-27 Mac OS X v10.4.7 at http://lists.apple.com/archives/security-announce/2006/Jun/msg00000.html.
- ClamAV Web site, Security advisory: 0.88.2 at http://www.clamav.net/security/0.88.2.html.
- Kolab Security Issue 09 20060516, buffer overflow, remotely exploitable (CVE-2006-1989) at http://kolab.org/security/kolab-vendor-notice-09.txt.
- Mac OS X 10.4.7 Update , About the security content of the Mac OS X 10.4.7 Update at http://docs.info.apple.com/article.html?artnum=303973.
- SourceForge.net: Files, Clam AntiVirus - File Release Notes and Changelog - Release Name: 0.88.2 at http://sourceforge.net/project/shownotes.php?group_id=86638&release_id=413754.
- BID-17754: Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability
- CVE-2006-1989: Buffer overflow in the get_database function in the HTTP client in Freshclam in ClamAV 0.80 to 0.88.1 might allow remote web servers to execute arbitrary code via long HTTP headers.
- DSA-1050: clamav -- buffer overflow
- GLSA-200605-03: ClamAV: Buffer overflow in Freshclam
- MDKSA-2006:080: Updated clamav packages fix vulnerability
- OSVDB ID: 25120: Clam AntiVirus Freshclam HTTP Header Remote Overflow
- SA19880: ClamAV Freshclam HTTP Header Buffer Overflow Vulnerability
- SA20877: Mac OS X Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1016392: Clam AntiVirus Buffer Overflow in Freshclam Lets Remote Servers Execute Arbitrary Code
- SUSE-SA:2006:025: cyrus-sasl-digestmd5 denial of service attack
- SUSE-SR:2006:010: SUSE Security Summary Report
- US-CERT VU#599220: ClamAV vulnerable to buffer overflow via malicious database mirror
- VUPEN/ADV-2006-1586: ClamAV Freshclam HTTP Header Size Client-Side Buffer Overflow Vulnerability
- VUPEN/ADV-2006-2566: Apple Mac OS X Multiple Command Execution and Privilege Escalation Vulnerabilities
Reported:
May 01, 2006
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