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

2024-04-2903:42:04

CWE-20

php

github.com

php

password_verify

null byte

security issue

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.6%

JSON

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.

CNA Affected

[
  {
    "vendor": "PHP Group",
    "product": "PHP",
    "versions": [
      {
        "status": "affected",
        "version": "8.1.*",
        "lessThan": "8.1.28",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.2.*",
        "lessThan": "8.2.18",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.3.*",
        "lessThan": "8.3.5",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "affected"
  }
]