Vulnerability identifier: #VU56158

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23048

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP
Hardware solutions / Firmware

Vendor: F5 Networks

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when GPRS Tunneling Protocol (GTP) iRules commands or a GTP profile is configured on a virtual server. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIG-IP: 11.6.1 - 11.6.5, 12.1.0 - 12.1.6, 13.1.0 - 13.1.4, 14.1.0 - 14.1.4, 15.1.0 - 15.1.3, 16.0.0 - 16.0.1

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External links
http://support.f5.com/csp/article/K19012930

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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.