CVE-2013-6438 Denial of service in n/a

What is CVE-2013-6438?

CVE-2013-6438 is a medium-severity denial of service vulnerability in Apache Http Server, published on 18 Mar 2014. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The dav_xml_get_cdata function in main/util.c in the mod_dav module in the Apache HTTP Server before 2.4.8 does not properly remove whitespace characters from CDATA sections, which allows remote attackers to cause a denial of service (daemon crash) via a crafted DAV WRITE request.

Which versions are affected by CVE-2013-6438?

It affects 3 products.

Products include Apache Http Server, Canonical Ubuntu Linux, Oracle Http Server.

How do I fix CVE-2013-6438?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2013-6438 being exploited?

There is no known exploitation of CVE-2013-6438 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 DEBIAN-CVE-2013-6438, GHSA-2xpp-q4gq-7cc3.