Cleartext transmission of sensitive information in F5 BIG-IQ Centralized Management

Published: 2021-03-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-23005
Exploitation vector Local network
Public exploit N/A
Vulnerable software
BIG-IQ Centralized Management
Server applications / Remote management servers, RDP, SSH

Vendor F5 Networks, Inc.

Security Advisory

This security advisory describes one low risk vulnerability.

1) Cleartext transmission of sensitive information

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23005

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No


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

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information. When using a Quorum device for BIG-IQ high availability (HA) for automatic failover, BIG-IQ does not make use of Transport Layer Security (TLS) with the Corosync protocol. A remote attacker with ability to intercept network traffic can gain access to sensitive data.


Install updates from vendor's website.

Vulnerable software versions

BIG-IQ Centralized Management: 6.0.0, 6.0.1, 7.0.0,

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 local network (LAN).

How the attacker can exploit this vulnerability?

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

Is there known malware, which exploits this vulnerability?

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