Security restrictions bypass in F5 Networks BIG-IP



Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		BIG-IP
Hardware solutions / Firmware

Vendor F5 Networks

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU20467

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input when processing HTTP requests. A remote attacker can send specially crafted HTTP request that contains Content-Length and Transfer-Encoding headers and make the BIG-IP system to pass malformed HTTP requests to a target pool member webserver. As a result, an attacker might be able to perform HTTP Request Smuggling attack and influence the protected web application.

Mitigation

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

Vulnerable software versions

BIG-IP: 11.5.0 - 15.0.1

CPE2.3 External links

http://support.f5.com/csp/article/K50375550


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.



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