CVE-2024-3096

MEDIUM

PHP 8.1.0-8.1.27, 8.2.0-8.2.17, 8.3.0-8.3.4 - Authentication Bypass via Null Byte Prefix in Hashed Password

Title source: llm

Description

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.

References (6)

Core 6

Core References

Mailing List

http://www.openwall.com/lists/oss-security/2024/04/12/11

Exploit, Vendor Advisory

https://github.com/php/php-src/security/advisories/GHSA-h746-cjrr-wfmr

Mailing List

https://lists.debian.org/debian-lts-announce/2024/05/msg00005.html

Third Party Advisory

https://security.netapp.com/advisory/ntap-20240510-0010/

Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/[email protected]/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY/

Mailing List, Third Party Advisory

https://lists.fedoraproject.org/archives/list/[email protected]/message/ZGWIK3HMBACERGB4TSBB2JUOMPYY2VKY/

Scores

CVSS v3 6.5

EPSS 0.0107

EPSS Percentile 78.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-20

Status published

Products (2)

debian/debian_linux 10.0

php/php 8.1.0 - 8.1.28

Published Apr 29, 2024

Tracked Since Feb 18, 2026