Use of insufficiently random values in Joomla! - CVE-2021-23126
Published: March 2, 2021
Vulnerability identifier: #VU51110
CSH Severity: Low
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-23126
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass 2FA.
The vulnerability exists due to usage of the insecure rand() function within the process of generating the 2FA secret. A remote attacker can guess 2FA token and bypass authentication process.
Affected software
Joomla!
How to mitigate CVE-2021-23126
Install updates from vendor's website.
Joomla! - update to 3.9.25