CVE-2003-0993 Auth bypass in n/a

What is CVE-2003-0993?

CVE-2003-0993 is a high-severity authentication bypass vulnerability in Apache Http Server, published on 1 Sep 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

mod_access in Apache 1.3 before 1.3.30, when running big-endian 64-bit platforms, does not properly parse Allow/Deny rules using IP addresses without a netmask, which could allow remote attackers to bypass intended access restrictions.

Which versions are affected by CVE-2003-0993?

It affects 1 product.

Products include Apache Http Server.

How do I fix CVE-2003-0993?

No fix has been published for CVE-2003-0993 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2003-0993 being exploited?

There is no known exploitation of CVE-2003-0993 in the wild and no public exploit code.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4m6j-mh25-2w47.