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CVE-2024-3096— PHP function password_verify can erroneously return true when argument contains NUL

Quick assessment

Affected
PHP Group PHP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHP是一种在服务器端执行的脚本语言。 PHP存在安全漏洞，该漏洞源于使用 password_hash 函数存储的密码以空字节 (x00) 开头，则通过 password_verify 函数测试空白字符串作为密码将错误地返回true。以下版本受到影响：8.1.版本至8.1.28之前版本、8.2.版本至8.2.18之前版本、8.3.*版本至8.3.5之前版本。

CVSS 6.5 · Medium EPSS 1.49% · P74

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-3096

Vulnerability Information
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Vulnerability Title
PHP function password_verify can erroneously return true when argument contains NUL
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP是一种在服务器端执行的脚本语言。 PHP存在安全漏洞，该漏洞源于使用 password_hash 函数存储的密码以空字节 (x00) 开头，则通过 password_verify 函数测试空白字符串作为密码将错误地返回true。以下版本受到影响：8.1.*版本至8.1.28之前版本、8.2.*版本至8.2.18之前版本、8.3.*版本至8.3.5之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PHP Group PHP 8.1.* ~ 8.1.28 -

II. Public POCs for CVE-2024-3096

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III. Intelligence Information for CVE-2024-3096

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Vendor Advisories for CVE-2024-3096 (2)

Mailing List Discussions for CVE-2024-3096 (2)

Same Patch Batch · PHP Group · 2024-04-29 · 4 CVEs total

CVE-2024-1874 9.4 CRITICAL Command injection via array-ish $command parameter of proc_open()
CVE-2024-2757 7.5 HIGH PHP mb_encode_mimeheader runs endlessly for some inputs
CVE-2024-2756 6.5 MEDIUM __Host-/__Secure- cookie bypass due to partial CVE-2022-31629 fix

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-20