HTTP request smuggling in F5OS httpd component

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU64078

Risk: Medium

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2022-26377

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests in mod_proxy_ajp. A remote attacker can send a specially crafted HTTP request to the server and smuggle requests to the AJP server it forwards requests to.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

F5OS: 1.0.0 - 1.3.2

CPE2.3

• cpe:2.3:o:f5_networks:f5os:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:o:f5_networks:f5os:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:o:f5_networks:f5os:1.1.1:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K26314875

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.