CVE-2017-12171 Misconfiguration in httpd

What is CVE-2017-12171?

CVE-2017-12171 is a medium-severity vulnerability in Apache Http Server, published on 26 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A regression was found in the Red Hat Enterprise Linux 6.9 version of httpd 2.2.15-60, causing comments in the "Allow" and "Deny" configuration lines to be parsed incorrectly. A web administrator could unintentionally allow any client to access a restricted HTTP resource.

Weakness: CWE-20, CWE-284

Which versions are affected by CVE-2017-12171?

It affects 5 products.

Products include Apache Http Server, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation.

How do I fix CVE-2017-12171?

Apply the vendor's patch.

Is CVE-2017-12171 being exploited?

There is no known exploitation of CVE-2017-12171 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-c8w6-x7h9-gq97.