An input sanitation flaw in mod_authnz_external allows remote attacker to conduct SQL injection.

Announced

2011-10-25

Revised

2011-10-25

Access

remote

Bugs

#386165

Advisory

https://security.gentoo.org/glsa/201110-23

Affected packages

Package	Arch	Vulnerable	Unaffected
www-apache/mod_authnz_external	*	< 3.2.6	>= 3.2.6

Background

mod_authnz_external is a tool for creating custom authentication backends for HTTP basic authentication.

Description

mysql/mysql-auth.pl in mod_authnz_external does not properly sanitize input before using it in an SQL query.

Impact

A remote attacker could exploit this vulnerability to inject arbitrary SQL statements by using a specially crafted username for HTTP authentication on a site using mod_authnz_external.

Workaround

There is no known workaround at this time.

Resolution

All Apache mod_authnz_external users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=www-apache/mod_authnz_external-3.2.6"

References

• CVE-2011-2688