CVE-2024-34340 Authentication Bypass when using using older password hashes

2024-05-1315:26:32

CWE-287

CWE-697

GitHub_M

github.com

cve-2024-34340

authentication bypass

cacti

password hash

php

type juggling vulnerability

patch

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

6.8

Confidence

Low

SSVC

Exploitation

poc

Automatable

Technical Impact

partial

JSON

Cacti provides an operational monitoring and fault management framework. Prior to version 1.2.27, Cacti calls compat_password_hash when users set their password. compat_password_hash use password_hash if there is it, else use md5. When verifying password, it calls compat_password_verify. In compat_password_verify, password_verify is called if there is it, else use md5. password_verify and password_hash are supported on PHP < 5.5.0, following PHP manual. The vulnerability is in compat_password_verify. Md5-hashed user input is compared with correct password in database by $md5 == $hash. It is a loose comparison, not ===. It is a type juggling vulnerability. Version 1.2.27 contains a patch for the issue.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*"
    ],
    "vendor": "cacti",
    "product": "cacti",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.2.27",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]