Vulnerability identifier: #VU94503

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2024-40898

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache HTTP Server
Server applications / Web servers

Vendor: Apache Foundation

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in Apache HTTP Server on Windows with mod_rewrite in server/vhost context. A remote attacker can force the web server to leak NTML hashes to a malicious server via SSRF and malicious requests.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache HTTP Server: 2.4 - 2.4.61

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External links
http://lists.apache.org/thread/5hhwb5mom6ptlzyhrxft72191hd0zfvh

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.