CVE-2004-0189 Security feature bypass in n/a
Remote attackers can bypass URL access control lists in Squid proxy servers by using NULL characters in URLs, allowing unauthorized access to restricted 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-2004-0189?
CVE-2004-0189 is a high-severity vulnerability in n/a, published on 1 Sep 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.
Which versions are affected by CVE-2004-0189?
It affects 1 product.
Linux distribution packages (8)
squid Red Hat:enterprise_linux:3::as | All versions | 7:2.5.STABLE3-5.3E |
squid-debuginfo Red Hat:enterprise_linux:3::as | All versions | 7:2.5.STABLE3-5.3E |
squid Red Hat:enterprise_linux:3::desktop | All versions | 7:2.5.STABLE3-5.3E |
squid-debuginfo Red Hat:enterprise_linux:3::desktop | All versions | 7:2.5.STABLE3-5.3E |
squid Red Hat:enterprise_linux:3::es | All versions | 7:2.5.STABLE3-5.3E |
squid-debuginfo Red Hat:enterprise_linux:3::es | All versions | 7:2.5.STABLE3-5.3E |
squid Red Hat:enterprise_linux:3::ws | All versions | 7:2.5.STABLE3-5.3E |
squid-debuginfo Red Hat:enterprise_linux:3::ws | All versions | 7:2.5.STABLE3-5.3E |
Products include Squid Squid.
How do I fix CVE-2004-0189?
Upgrade to a fixed version.
Is CVE-2004-0189 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0189 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2004-0189, DSA-474, GHSA-wgp5-p97p-cph9, RHSA-2004:133.