Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

BID:17754

Info

Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

Bugtraq ID: 17754
Class: Boundary Condition Error
CVE: CVE-2006-1989
Remote: Yes
Local: No
Published: May 01 2006 12:00AM
Updated: Dec 05 2006 04:09PM
Credit: The vendor credits Ulf Harnhammar and an anonymous researcher from Germany with the simultaneous discovery of this issue.
Vulnerable: Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
Tomasz Kojm Clam AntiVirus 0.87
Tomasz Kojm Clam AntiVirus 0.83
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE Linux Enterprise Server 9
SuSE Linux Desktop 1.0
S.u.S.E. SuSE Linux School Server for i386
S.u.S.E. SUSE LINUX Retail Solution 8.0
S.u.S.E. SuSE Linux Openexchange Server 4.0
S.u.S.E. Open-Enterprise-Server 9.0
S.u.S.E. Novell Linux Desktop 9.0
S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Professional 9.0 x86_64
S.u.S.E. Linux Professional 9.0
S.u.S.E. Linux Professional 8.2
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
S.u.S.E. Linux Personal 8.2
Mandriva Linux Mandrake 2006.0 x86_64
Mandriva Linux Mandrake 2006.0
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
Kolab Kolab Groupware Server 2.0.2
Kolab Kolab Groupware Server 2.0.1
ifenslave ifenslave 0.88
Gentoo Linux
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Clam Anti-Virus ClamAV 0.88.1
Apple Mac OS X Server 10.4.6
Apple Mac OS X Server 10.4.5
Apple Mac OS X Server 10.4.4
Not Vulnerable: Kolab Kolab Groupware Server 2.0.3
Clam Anti-Virus ClamAV 0.88.2

Discussion

Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

ClamAV's freshclam utility is susceptible to a remote buffer-overflow vulnerability. The utility fails to perform sufficient boundary checks in server-supplied HTTP data before copying it to an insufficiently sized memory buffer.

To exploit this issue, attackers must subvert webservers in the ClamAV database server pool. Or, they would perform DNS-based attacks or man-in-the-middle attacks to cause affected freshclam applications to connect to attacker-controlled webservers.

This issue allows remote attackers to execute arbitrary machine code in the context of the freshclam utility. The affected utility may run with superuser privileges, aiding remote attackers in the complete compromise of affected computers.

ClamAV versions 0.88 and 0.88.1 are affected by this issue.

Exploit / POC

Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected]:[email protected].

Solution / Fix

Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

Solution:
The vendor has released updates to address these issues. Please see the referenced advisories for more information.


Tomasz Kojm Clam AntiVirus 0.83

Tomasz Kojm Clam AntiVirus 0.87

ifenslave ifenslave 0.88

Clam Anti-Virus ClamAV 0.88.1

Apple Mac OS X Server 10.4.4

Apple Mac OS X Server 10.4.5

Apple Mac OS X Server 10.4.6

References

Clam AntiVirus FreshClam Remote Buffer Overflow Vulnerability

References:
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