Out-of-bounds read in NSS component in F5OS and Traffix SDC

Published: 2021-04-16
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2020-12403
Exploitation vector Network
Public exploit N/A
Vulnerable software
Operating systems & Components / Operating system

Traffix SDC
Client/Desktop applications / Software for system administration

Vendor F5 Networks, Inc.

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Out-of-bounds read

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-12403

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

Exploit availability: No


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

The vulnerability exists due to a boundary condition when processing data encrypted with CHACHA20-POLY1305 ciphersuite. A remote attacker can trick the victim to connect to a malicious server and gain access to sensitive information.


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

Vulnerable software versions

F5OS: 1.1.0

Traffix SDC: 5.1.0, 5.1.0 CF 19, 5.1.0 CF 22

CPE External links


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.