unzoo.c, as used in multiple products including AMaViS 2.4.1 and earlier, allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry structure that points to a previous file.
For Barracuda Spam Firewall:
Upgrade to the latest virus definition version of Barracuda Spam Firewall (virusdef 2.0.6399 for 3.4 and after or virusdef 2.0.6399o for prior to 3.4), available from the automatic update.
For Panda Software Antivirus:
Upgrade to the latest version of Panda Software Antivirus (4/2/2007 or later), available from the automatic update feature.
For avast! antivirus:
Upgrade to the latest version of Panda Software Antivirus (4.7.981 or later), available from the avast! antivirus Web site. See references.
For Avira AntiVir:
Upgrade to the latest version of Avira AntiVir (avpack32.dll version 126.96.36.199 or later), available from the automatic update feature.
Refer to ASA-2007-2 for patch, upgrade, or suggested workaround information. See References.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because
they may have information that would be of interest to you. No inferences should be drawn on account of other sites
being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose.
NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further,
NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about
this page to firstname.lastname@example.org.
20070504 Multiple vendors ZOO file decompression infinite loop DoS