Security restrictions bypass in F5 BIG-IP DNS

1) Improper access control

EUVDB-ID: #VU11622

Risk: Low

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information and write arbitrary files on the target system.

The weakness exists due to improper access control. On systems where the hostname is a public domain name that the BIG-IP system owner does not control, a remote attacker can hijack the DNS to cause DNS queries to be redirected to a remote DNS server.

Mitigation

Cybersecurity is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

BIG-IP DNS: 12.0.0 - 13.1.0.3

CPE2.3

• cpe:2.3:h:f5_networks:big-ip_dns:13.1.0.3:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_dns:13.1.0.2:*:*:*:*:*:*:*
• cpe:2.3:h:f5_networks:big-ip_dns:13.1.0.1:*:*:*:*:*:*:*

External links

http://support.f5.com/csp/article/K32518458

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.