CVE-2024-40898 Apache HTTP Server: SSRF with mod_rewrite in server/vhost context on Windows

What is CVE-2024-40898?

CVE-2024-40898 is a critical server-side request forgery vulnerability in Apache Http Server, published on 18 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SSRF in Apache HTTP Server on Windows with mod_rewrite in server/vhost context, allows to potentially leak NTML hashes to a malicious server via SSRF and malicious requests.

Users are recommended to upgrade to version 2.4.62 which fixes this issue.

Weakness: CWE-918

Which versions are affected by CVE-2024-40898?

1 open source package ship an affected version, including apache. It affects 1 product.

Products include Apache Http Server.

How do I fix CVE-2024-40898?

Upgrade apache to 2.4.62 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2024-40898 being exploited?

There is no known exploitation of CVE-2024-40898 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

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-2024-40898, BIT-apache-2024-40898, CLEANSTART-2026-FU14728, GHSA-f6mg-hq7f-jw2j.