Denial Of Service (DoS)

2024-03-0408:15:00

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

denial of service

phpseclib

vulnerability

handling malformed certificates

cpu consumption

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.9

Confidence

High

EPSS

Percentile

15.5%

JSON

phpseclib/phpseclib is vulnerable to a Denial Of Service (DoS). The vulnerability is due to a flaw in handling malformed certificates in the phpseclib/Math/BigInteger.php file by using the method isPrime(). It allows an attacker to trigger excessive CPU consumption during the isPrime primality check.