CVE-2024-27354

2024-03-0100:00:00

ubuntu.com

phpseclib

denial of service

crafted certificate

prime

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

7.3

Confidence

High

EPSS

0.001

Percentile

41.1%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchphp-phpseclib< anyUNKNOWN
ubuntu20.04noarchphp-phpseclib< anyUNKNOWN
ubuntu22.04noarchphp-phpseclib< anyUNKNOWN
ubuntu16.04noarchphp-phpseclib< anyUNKNOWN
ubuntu22.04noarchphp-phpseclib3< anyUNKNOWN
ubuntu24.04noarchphp-phpseclib3< anyUNKNOWN
ubuntu18.04noarchphpseclib< anyUNKNOWN
ubuntu20.04noarchphpseclib< anyUNKNOWN
ubuntu22.04noarchphpseclib< anyUNKNOWN
ubuntu16.04noarchphpseclib< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	php-phpseclib	< any	UNKNOWN
ubuntu	20.04	noarch	php-phpseclib	< any	UNKNOWN
ubuntu	22.04	noarch	php-phpseclib	< any	UNKNOWN
ubuntu	16.04	noarch	php-phpseclib	< any	UNKNOWN
ubuntu	22.04	noarch	php-phpseclib3	< any	UNKNOWN
ubuntu	24.04	noarch	php-phpseclib3	< any	UNKNOWN
ubuntu	18.04	noarch	phpseclib	< any	UNKNOWN
ubuntu	20.04	noarch	phpseclib	< any	UNKNOWN
ubuntu	22.04	noarch	phpseclib	< any	UNKNOWN
ubuntu	16.04	noarch	phpseclib	< any	UNKNOWN