webapp-config: Insecure temporary file handling

1.  Gentoo Linux Security Advisory

Version Information

Related bugreports: #91785

Synopsis

The webapp-config utility insecurely creates temporary files in a world writable directory, potentially allowing the execution of arbitrary commands.

2.  Impact Information

Background

webapp-config is a Gentoo Linux utility to help manage the installation of web-based applications.

Description

Eric Romang discovered webapp-config uses a predictable temporary filename while processing certain options, resulting in a race condition.

Impact

Successful exploitation of the race condition would allow an attacker to disrupt the operation of webapp-config, or execute arbitrary shell commands with the privileges of the user running webapp-config. A local attacker could use a symlink attack to create or overwrite files with the permissions of the user running webapp-config.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All webapp-config users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/webapp-config-1.11"

4.  References

• CVE-2005-1707