CVE-2017-3167 Auth bypass in Apache HTTP Server

What is CVE-2017-3167?

CVE-2017-3167 is a critical authentication bypass 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, use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed.

Weakness: CWE-287

Which versions are affected by CVE-2017-3167?

It affects 14 products.

Products include Apache Http Server, Apple Mac Os X, Debian Debian Linux, Netapp Clustered Data Ontap, Netapp Oncommand Unified Manager, Netapp Storagegrid and 8 more.

How do I fix CVE-2017-3167?

Upgrade to a fixed version.

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

Is CVE-2017-3167 being exploited?

There is no known exploitation of CVE-2017-3167 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-2017-3167, CLEANSTART-2026-TY04609, DEBIAN-CVE-2017-3167, GHSA-9mgw-4qp5-wrrj, UBUNTU-CVE-2017-3167.