CVE-2017-3169 Null dereference in Apache HTTP Server

What is CVE-2017-3169?

CVE-2017-3169 is a critical vulnerability in Apache Http Server, published on 20 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port.

Weakness: CWE-476

Which versions are affected by CVE-2017-3169?

It affects 1 product.

Products include Apache Http Server.

How do I fix CVE-2017-3169?

Upgrade to a fixed version.

Is CVE-2017-3169 being exploited?

There is no known exploitation of CVE-2017-3169 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 ALPINE-CVE-2017-3169, CLEANSTART-2026-JY61388, DEBIAN-CVE-2017-3169, GHSA-p3gj-wq33-qg67, UBUNTU-CVE-2017-3169.