Apache mod_tcl: Format string vulnerability

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apache/mod_tcl	< 1.0.1	>= 1.0.1	All supported architectures

Related bugreports: #151359

A format string vulnerabilty has been found in Apache mod_tcl, which could lead to the remote execution of arbitrary code.

2. Impact Information

Apache mod_tcl is a TCL interpreting module for the Apache 2.x web server.

Sparfell discovered format string errors in calls to the set_var function in tcl_cmds.c and tcl_core.c.

A remote attacker could exploit the vulnerability to execute arbitrary code with the rights of the user running the Apache server.

3. Resolution Information

There is no known workaround at this time.

All mod_tcl users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apache/mod_tcl-1.0.1"

4. References

Updated October 24, 2006

Summary: This is a Gentoo Linux Security Advisory

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