Information disclosure in F5 Networks BIG-IP Linux kernel

1) Information disclosure

EUVDB-ID: #VU19187

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10639

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the possibility to extract the Kernel Address Space Layout Randomization (KASLR) kernel image offset of the affected software using the IP ID values that the kernel produces for connectionless protocols. A remote attacker can force the targeted system to send UDP or ICMP traffic to an attacker-controlled IP address and gain unauthorized access to sensitive information on the system.

Mitigation

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

Vulnerable software versions

BIG-IP: 15.0.0 - 15.0.1

CPE2.3

• cpe:2.3:h:f5_networks:big-ip:15.0.1:*:*:*:*:*:*:*

External links

https://support.f5.com/csp/article/K32804955

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.