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CVE-2024-2408

Public on 2024-06-09
Modified on 2024-06-12
Description

The openssl_private_decrypt function in PHP, when using PKCS1 padding (OPENSSL_PKCS1_PADDING, which is the default), is vulnerable to the Marvin Attack unless it is used with an OpenSSL version that includes the changes from this pull request: https://github.com/openssl/openssl/pull/13817 (rsa_pkcs1_implicit_rejection). These changes are part of OpenSSL 3.2 and have also been backported to stable versions of various Linux distributions, as well as to the PHP builds provided for Windows since the previous release. All distributors and builders should ensure that this version is used to prevent PHP from being vulnerable.

PHP Windows builds for the versions 8.1.29, 8.2.20 and 8.3.8 and above include OpenSSL patches that fix the vulnerability.

Severity
Medium
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CVSS v3 Base Score
5.9
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Php8.1 Extra php 2024-06-19 20:39 ALAS2PHP8.1-2024-005
Amazon Linux 2023 php8.1 2024-07-18 01:24 ALAS2023-2024-654
Amazon Linux 2023 php8.2 2024-08-01 04:06 ALAS2023-2024-678

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv3 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N