Vulnerability reported in F-Prot™ Antivirus for Linux fixed

10 Febuary 2003

In response to an advisory posted on vuln-dev indicating security problems in the commandline scanner in F-Prot Antivirus for Linux and FreeBSD.

FRISK Software International would like to emphasize that the problem has been resolved. Updated packages are available for download now.

The problem was in insufficient bounds checking on the filename argument, when writing out the scan report in the case of non-existing file. This programming error does not constitute a security threat.

Certain applications could however constitute a security threat by their usage of F-Prot™ Antivirus.

For example administrators might have setup the tool to be run as administrator without regard to the individual user's authority (suid root), in which case it would constitute a privilege elevation problem.

However, default installations and use of F-Prot™ Antivirus with recommended third-party tools are not vulnerable. Neither is the daemon version of F-Prot Antivirus of Linux and FreeBSD.

Also, the advisory stated that the latest available version of F-Prot Antivirus for Linux and FreeBSD was version 3.12b. This is wrong. The latest available version of F-Prot Antivirus for Linux and FreeBSD is version 3.12d, available since 20th january 2003. Release number 1 of the 3.12d RPM and Debian packages, and the latest tarballs have been patched.

We recommend that usere running an older version of F-Prot™ Antivirus for Linux update their program by visiting our updates center.

Commtouch® is a leading developer of anti virus software and anti spam filtering services. Commtouch's anti virus computer software, F-PROT Antivirus, is available for a number of operating systems such as Windows, Linux, BSD, Solaris, and AIX as well as the Microsoft Exchange groupware.

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