Use of cryptographically weak pseudo-random number generator (PRNG) in Apereo CAS - CVE-2019-10754
Published: September 24, 2019 / Updated: September 24, 2019
Vulnerability identifier: #VU21291
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-10754
CWE-ID: CWE-338
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to the application generates tokens using a weak cryptographic algorithm provided by Apache commons-lang3 RandomStringUtils. A remote attacker can guess randomly generate tokens and bypass security restriction that rely on these tokens.
Affected software
Apereo CAS
How to mitigate CVE-2019-10754
Install updates from vendor's website.
Apereo CAS - update to 6.1.0 RC5