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TI-2024-02900 Aliases CVE-2024-3096

PHP function password_verify can erroneously return true when argument contains NUL

Priority LOW 34CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 2 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In PHP  version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if a password stored with password_hash() starts with a null byte (\x00), testing a blank string as the password via password_verify() will incorrectly return true.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01492 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial PHP (PHP Group): 8.1.28, 8.2.18, 8.3.5Red Hat: 5 advisoriesRed Hat: 2 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
PHP GroupPHPbefore 8.1.28; before 8.2.18; before 8.3.58.1.28, 8.2.18, 8.3.5Patch availableCNA
  • PHP VendorPHP Group Affected before 8.1.28; before 8.2.18; before 8.3.5 Fixed in 8.1.28, 8.2.18, 8.3.5 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*8.1.0 to before 8.1.28; 8.2.0 to before 8.2.18; 8.3.0 to before 8.3.5VulnerablePHP
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions 8.1.0 to before 8.1.28; 8.2.0 to before 8.2.18; 8.3.0 to before 8.3.5 Vulnerable ·PHP
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA PHP (PHP Group) Fixed in 8.1.28, 8.2.18, 8.3.5

Red Hat 5 advisories

  • RHSA-2025:7315 Released 2025-05-13 · Red Hat rating Moderate
    php security update
    • Red Hat Enterprise Linux AppStream (v. 9) php-8.0.30-2.el9, php-bcmath-8.0.30-2.el9, php-cli-8.0.30-2.el9 +22
  • RHSA-2024:10950 Released 2024-12-11 · Red Hat rating Moderate
    php:8.1 security update
    • Red Hat Enterprise Linux AppStream (v. 9) apcu-panel-5.1.21-1.module+el9.1.0.z+15477+cb86791d.noarch::php:8.1, php-8.1.30-1.module+el9.5.0+22481+3e1c6d75.aarch64::php:8.1, php-8.1.30-1.module+el9.5.0+22481+3e1c6d75.ppc64le::php:8.1 +47
  • RHSA-2024:10952 Released 2024-12-11 · Red Hat rating Moderate
    php:7.4 security update
    • Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.18-1.module+el8.10.0+22485+a3539972.noarch::php:7.4, libzip-1.6.1-1.module+el8.10.0+22485+a3539972.aarch64::php:7.4, libzip-1.6.1-1.module+el8.10.0+22485+a3539972.ppc64le::php:7.4 +47
Show 2 more Red Hat advisories
  • RHSA-2024:10951 Released 2024-12-11 · Red Hat rating Moderate
    php:8.2 security update
    • Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.23-1.module+el8.10.0+20770+a5eca186.noarch::php:8.2, libzip-1.7.3-1.module+el8.10.0+20770+a5eca186.aarch64::php:8.2, libzip-1.7.3-1.module+el8.10.0+20770+a5eca186.ppc64le::php:8.2 +47
  • RHSA-2024:10949 Released 2024-12-11 · Red Hat rating Moderate
    php:8.2 security update
    • Red Hat Enterprise Linux AppStream (v. 9) apcu-panel-5.1.23-1.module+el9.4.0+20748+b46899d2.noarch::php:8.2, php-8.2.25-1.module+el9.5.0+22477+5fdac06d.aarch64::php:8.2, php-8.2.25-1.module+el9.5.0+22477+5fdac06d.ppc64le::php:8.2 +47

Fixed in the same release

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

  • Release ·

    PHP 8.1.28, 8.2.18, 8.3.5

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2024-01743 Command injection via array-ish $command parameter of proc_open()Priority HIGH 82
    • TI-2024-02567 __Host-/__Secure- cookie bypass due to partial CVE-2022-31629 fixPriority MEDIUM 62
    Show all 3 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:10951, RHSA-2024:10952
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:10949, RHSA-2024:10950, RHSA-2025:7315
Not affected: 1 product
  • Red Hat Enterprise Linux 10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-3096

References

Exploit 1

Advisory 1

Other 2

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences