> ClamAV Freshclam HTTP Header Buffer Overflow Vulnerability
> SECUNIA ADVISORY ID:
> VERIFY ADVISORY:
> Moderately critical
> DoS, System access
> From remote
> Clam AntiVirus (clamav) 0.x
> A vulnerability has been reported in ClamAV, which can be exploited
> by malicious people to cause a DoS (Denial of Service) and
> potentially to compromise a vulnerable system.
> The vulnerability is caused due to a boundary error within the HTTP
> client in the Freshclam command line utility. This can be exploited
> to cause a stack-based buffer overflow when the HTTP headers received
> from a web server exceeds 8KB.
> Successful exploitation requires that Freshclam is used to download
> virus signature updates from a malicious mirror web server e.g. via
> DNS poisoning.
> The vulnerability has been reported in version 0.80 through 0.88.1.
> Update to version 0.88.2.
> PROVIDED AND/OR DISCOVERED BY:
> The vendor credits Ulf Harnhammar and anonymous researcher from
> ORIGINAL ADVISORY: