Information disclosure in OpenSSL component in BIG-IP



Published: 2021-10-03 | Updated: 2022-01-10
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2021-3712
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
BIG-IP
Hardware solutions / Firmware

BIG-IP APM
Hardware solutions / Security hardware applicances

Vendor F5 Networks

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU56064

Risk: Medium

CVSSv3.1: 6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-3712

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing ASN.1 strings related to a confusion with NULL termination of strings in array. A remote attacker can pass specially crafted data to the application to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

BIG-IP: 12.1.0 - 16.1.0

BIG-IP APM: 11.6.1 - 16.0.1.2

External links

http://support.f5.com/csp/article/K19559038


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.



###SIDEBAR###