CVE-2022-31627 Heap buffer overflow in finfo_buffer

2022-07-0500:00:00

CWE-590

php

www.cve.org

7.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

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

9.7 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

62.2%

JSON

In PHP versions 8.1.x below 8.1.8, when fileinfo functions, such as finfo_buffer, due to incorrect patch applied to the third party code from libmagic, incorrect function may be used to free allocated memory, which may lead to heap corruption.

CNA Affected

[
  {
    "product": "PHP",
    "vendor": "PHP Group",
    "versions": [
      {
        "lessThan": "8.1.8",
        "status": "affected",
        "version": "8.1.X",
        "versionType": "custom"
      }
    ]
  }
]