CVE-2024-27354 Information

Description

An issue was discovered in phpseclib 1.x before 1.0.23 2.x before 2.0.47 and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.

Reference

https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49 https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b