clamav: Endless loop / hang with crafter arj, CVE-2008-1387



CERT-FI published an advisory with a large number of samples of crafted archives.
The file with the md5sum b6046d890e6bd304e3756c88b989559a (named b6046d890e6bd304e3756c88b989559a.arj) hangs clamav with high load.

If you're running clamav on a mailserver, an attacker can DoS your Server remotely by sending some mails with the archive attached.


clamav 0.93 fixes this issue beside other security issues, if you're running clamav you should upgrade as soon as possible.

Disclosure Timeline

2008-03-17 CERT-FI publishes advisory
2008-03-26 Vendor contacted
2008-03-27 Vendor approves issue
2008-04-14 Vendor releases 0.93
2008-04-16 Advisory published

CVE Information

The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2008-1387 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.

Credits and copyright

This vulnerability was discovered by Hanno Boeck of webhosting. It's licensed under the creative commons attribution license.

Hanno Boeck, 2008-04-16,