CVE-2005-0194 Auth bypass in n/a

Critical 10.0 Published Updated

Remote attackers can bypass access controls in Squid proxy if empty ACLs are configured, allowing unauthorized access to protected resources.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2005-0194?

CVE-2005-0194 is a critical authentication bypass vulnerability in n/a, published on 6 Feb 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth schemes, in a way that effectively removes arguments, which could allow remote attackers to bypass intended ACLs if the administrator ignores the parser warnings.

Which versions are affected by CVE-2005-0194?

It affects 1 product.

Products include Squid Squid.

How do I fix CVE-2005-0194?

Upgrade to a fixed version.

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

Is CVE-2005-0194 being exploited?

There is no known exploitation of CVE-2005-0194 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2005-0194, GHSA-3vc4-p4vg-f376.

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