CVE-2004-0492 Memory corruption in n/a

What is CVE-2004-0492?

CVE-2004-0492 is a critical memory corruption vulnerability in Apache Http Server, published on 23 Jun 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.

Which versions are affected by CVE-2004-0492?

It affects 7 products.

Products include Apache Http Server, Hp Virtualvault, Hp Vvos, Hp Webproxy, Ibm Http Server, Openbsd Openbsd and 1 more.

How do I fix CVE-2004-0492?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2004-0492 being exploited?

There is no known exploitation of CVE-2004-0492 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 DSA-525, GHSA-w59m-3c5g-3v9c.