CVE-2009-2699 Denial of service in n/a

What is CVE-2009-2699?

CVE-2009-2699 is a high-severity denial of service vulnerability in Apache Http Server, published on 13 Oct 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.

Weakness: CWE-667

Which versions are affected by CVE-2009-2699?

It affects 2 products.

Products include Apache Http Server, Apache Portable Runtime.

How do I fix CVE-2009-2699?

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-2009-2699 being exploited?

There is no known exploitation of CVE-2009-2699 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-2vjp-v45q-4g2x.