#VU16778 Input validation error in BIG-IP LTM - CVE-2018-17539

Vulnerability identifier: #VU16778

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-17539

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BIG-IP LTM
Hardware solutions / Security hardware applicances

Vendor: F5 Networks

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

The vulnerability exists in BGP daemon (bgpd) due to insufficient validation of user-supplied input. A remote attacker can perform a denial of service attack via an autonomous system (AS) path containing 8 or more autonomous system number (ASN) elements.

Mitigation
Install update from vendor's website.

Vulnerable software versions

BIG-IP LTM: 11.2.1 - 14.0.0

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External links
https://support.f5.com/csp/article/K17264695

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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.