CVE-2005-0173 Auth bypass in n/a

High 7.5 Published 6 Feb 2005 Updated 7 Aug 2024

Remote authenticated users can bypass username-based Access Control Lists in Squid by using usernames with leading or trailing spaces.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2005-0173?

CVE-2005-0173 is a high-severity authentication bypass vulnerability in n/a, published on 6 Feb 2005. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.

Which versions are affected by CVE-2005-0173?

It affects 1 product.

Products include Squid Squid.

How do I fix CVE-2005-0173?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2005-0173 being exploited?

There is no known exploitation of CVE-2005-0173 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2005-0173, GHSA-2r4j-x5mr-ch9c.