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CVE-2024-2408· NVD / CVE Program· CNA php

PHP is vulnerable to the Marvin Attack

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.

MediumCVSS 5.9 · v3.1—No exploit Fix available
Published
Jun 9, 2024
Updated
Jun 17, 2026
EPSS
1.2% · 66th percentile
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Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
23 / 40 · 5.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
phpphp
fedoraprojectfedora

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • php php8.1.0 and later · before 8.1.29
  • php php8.2.0 and later · before 8.2.20
  • php php8.3.0 and later · before 8.3.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (php). Independent of NVD's CPE analysis and usually ahead of it.

  • PHP Group PHP

    • 8.1.* and later · before 8.1.29affected · semver
    • 8.2.* and later · before 8.2.20affected · semver
    • 8.3.* and later · before 8.3.8affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12php8.2before 8.2.18-18.2.18-1
Red Hat:enterprise_linux:8::baseosopensslbefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-debuginfobefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-debugsourcebefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-develbefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-libsbefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-libs-debuginfobefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Red Hat:enterprise_linux:8::baseosopenssl-perlbefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9
Rocky Linux:8opensslbefore 1:1.1.1k-12.el8_91:1.1.1k-12.el8_9

Same product

php: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-4577Argument Injection in PHP-CGIKEV
    99Now
  • CVE-2019-11043Underflow in PHP-FPM can lead to RCEKEV
    99Now
  • CVE-2012-1823sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle queKEV
    99Now
  • CVE-2018-7584In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a stack-based buffer under-read while pa
    65This week
  • CVE-2018-19518University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rsh command (by means of
    59Plan
  • CVE-2016-3078Multiple integer overflows in php_zip.c in the zip extension in PHP before 7.0.6 allow remote attackers to cause a denial of service (heap-b
    56Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
PHP Group PHP8.1.29Vendor (CNA)
PHP Group PHP8.2.20Vendor (CNA)
PHP Group PHP8.3.8Vendor (CNA)
debian:php8.28.2.18-1 · Debian:12Package registry (OSV)
red hat:openssl1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-debuginfo1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-debugsource1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-devel1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-libs1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-libs-debuginfo1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:openssl-perl1:1.1.1k-12.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
rocky linux:openssl1:1.1.1k-12.el8_9 · Rocky Linux:8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-203 · Observable Discrepancy

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records