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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
ClamAV VirusEvent parameter vulnerability
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200405-03
(ClamAV VirusEvent parameter vulnerability)
The VirusEvent parameter in the clamav.conf configuration file permits to
specify a system command to run whenever a virus is found. This system
command can make use of the "%f" parameter which is replaced by the name of
the file infected. The name of the file scanned is under control of the
attacker and is not sufficiently checked. Version 0.70 of clamav disables
the use of the "%f" parameter.
Sending a virus with a malicious file name can result in execution of
arbirary system commands with the rights of the antivirus process. Since
clamav is often associated to mail servers for email scanning, this attack
can be used remotely.
You should not use the "%f" parameter in your VirusEvent configuration.
All users of Clam AntiVirus should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-mail/clamav-0.70"
# emerge ">=net-mail/clamav-0.70"
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
|Intel Xeon E7-4830 2.13GHz 24MB 6.4GT/s SLC3Q CPU Server Processor
|Intel Xeon E5-2680V2 2.8GHz Ten Core (BX80635E52680V2) Processor
|DELL DIMENSION Motherboard P/N 411726100004 Pentium 4 CPU 2.66ghz / 512 / 533
|CPU Cooler Fan Heatsink Computer Heat Conduction Pipes Processor Aluminium PC
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