CVE-2024-2408: php — Exploit

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.

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CVSS v3.1 Score

5.9

MEDIUM

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

Weakness Type (CWE)

CWE-203 CWE-203

Affected Products

Vendor	Product	Versions
php	php	8.1.0 — 8.1.29
php	php	8.2.0 — 8.2.20
php	php	8.3.0 — 8.3.8
fedoraproject	fedora	All

References

Exploits

https://github.com/php/php-src/security/advisories/GHSA-hh26-4ppw-5864 https://github.com/php/php-src/security/advisories/GHSA-hh26-4ppw-5864

Other References

https://lists.fedoraproject.org/archives/list/[email protected]/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/ https://lists.fedoraproject.org/archives/list/[email protected]/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/ https://lists.fedoraproject.org/archives/list/[email protected]/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/ https://lists.fedoraproject.org/archives/list/[email protected]/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/ https://security.netapp.com/advisory/ntap-20250321-0008/

Frequently Asked Questions

What is CVE-2024-2408? +

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. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2024-2408? +

CVE-2024-2408 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-2408? +

CVE-2024-2408 affects products from fedoraproject, php, specifically: fedora, php. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-2408? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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