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Vulnerability · Published Jun 9, 2024 · Assigned by php

CVE-2024-2408PHP is vulnerable to the Marvin Attack

Medium 5.9

In plain English

A medium-severity security flaw in PHP from PHP Group. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)1.2%top 32.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8openssl1:1.1.1k-12.el8_9ALSA-2023:7877
AlmaLinux:8openssl-devel1:1.1.1k-12.el8_9ALSA-2023:7877
AlmaLinux:8openssl-libs1:1.1.1k-12.el8_9ALSA-2023:7877
AlmaLinux:8openssl-perl1:1.1.1k-12.el8_9ALSA-2023:7877
Debian:12php8.28.2.18-1DEBIAN-CVE-2024-2408
Rocky Linux:8openssl1:1.1.1k-12.el8_9RLSA-2023:7877

Affected products (as reported)

VendorProductVersions
PHP Group PHP 8.1.* – before 8.1.298.2.* – before 8.2.208.3.* – before 8.3.8

Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References