TI-2024-02236 Aliases CVE-2024-2408

PHP is vulnerable to the Marvin Attack

MEDIUM 60CWE-203Published 2024-06-09 · Updated 2025-03-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Partial Red Hat: 1 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-203.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01158 67th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial PHP (PHP Group): 8.1.29, 8.2.20, 8.3.8Red Hat: 1 advisoryRed Hat: 1 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
PHP Group	PHP	before 8.1.29; before 8.2.20; before 8.3.8	8.1.29, 8.2.20, 8.3.8	Patch available	CNA

PHP VendorPHP Group Affected before 8.1.29; before 8.2.20; before 8.3.8 Fixed in 8.1.29, 8.2.20, 8.3.8 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:php:php::::::::	8.1.0 to before 8.1.29; 8.2.0 to before 8.2.20; 8.3.0 to before 8.3.8	Vulnerable	PHP
cpe:2.3:o:fedoraproject:fedora:40:::::::*	40	Vulnerable	Fedoraproject

cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions 8.1.0 to before 8.1.29; 8.2.0 to before 8.2.20; 8.3.0 to before 8.3.8 Vulnerable ·PHP
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* Versions 40 Vulnerable ·Fedoraproject

Remediation

Fix · CNA PHP (PHP Group) Fixed in 8.1.29, 8.2.20, 8.3.8

Red Hat 1 advisory

RHSA-2023:7877 Released 2023-12-19 · Red Hat rating Low
openssl security update
- Red Hat Enterprise Linux BaseOS (v. 8) openssl-1:1.1.1k-12.el8_9, openssl-devel-1:1.1.1k-12.el8_9, openssl-libs-1:1.1.1k-12.el8_9 +1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2024-06-09
PHP 8.1.29, 8.2.20, 8.3.8
4 records Highest priority Priority CRITICAL 1 CRITICAL, 1 HIGH, 2 MEDIUM
Other records, highest priority first
- TI-2024-04260 Argument Injection in PHP-CGIPriority CRITICAL 100
- TI-2024-05189 Command injection via array-ish $command parameter of proc_open() (bypass CVE-2024-1874 fix)Priority HIGH 73
- TI-2024-05072 Filter bypass in filter_var (FILTER_VALIDATE_URL)Priority MEDIUM 63
Show all 4 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix yet
Red Hat Enterprise Linux 9	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux BaseOS (v. 8)	Fixed	RHSA-2023:7877

Timeline

2026-10-02 Threatist record created from CVE-2024-2408

References

TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
TI-2024-01743 Command injection via array-ish $command parameter of proc_open() CVSS 3.1CRITICAL 9.4
TI-2022-13555 PDO::quote() may return unquoted string CVSS 3.1CRITICAL 9.1
TI-2024-10408 Reference counting in php_request_shutdown causes Use-After-Free CVSS 4.0CRITICAL 9.2

See all 107 →

Sources

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