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CVE-2024-27354

Date: February 29, 2024

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.

Language: PHP

Severity Score

Related Resources (13)

https://github.com/phpseclib/phpseclib/commit/2870c8fab3f132d2ed40a66c97a36fe5ab625698
https://nvd.nist.gov/vuln/detail/CVE-2024-27354
https://security-tracker.debian.org/tracker/CVE-2024-27354
https://github.com/phpseclib/phpseclib
https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27354.yaml
https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html
https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575
https://github.com/advisories/GHSA-hg35-mp25-qf6h
https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html
https://github.com/phpseclib/phpseclib/commit/c55b75199ec8d12cec6eadf6da99da4a3712fe56
https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49
https://www.mend.io/vulnerability-database/CVE-2024-27354

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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