Denial of service in F5 BIG-IP

Published: 2018-12-27

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-15335 CVE-2018-17539
CWE-ID	CWE-264 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	BIG-IP APM Hardware solutions / Security hardware applicances BIG-IP LTM Hardware solutions / Security hardware applicances
Vendor	F5 Networks

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Denial of service

EUVDB-ID: #VU16775

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-2018-15335

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to APM becomes a client application to an external OAuth authorization server when APM is deployed as an OAuth Resource Server. A remote attacker can cause APM not to display the intended message in the failure response when communication between the BIG-IP APM and the OAuth authorization server is lost.

Mitigation

Update to version 14.0.0.

Vulnerable software versions

BIG-IP APM: 13.0.0 - 13.1.1

CPE2.3

External links

https://support.f5.com/csp/article/K27617652

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.

2) Input validation error

EUVDB-ID: #VU16778