CVE-2019-11041 heap-buffer-overflow on exif_scan_thumbnail in EXIF extension

2019-08-0919:26:34

CWE-125

php

www.cve.org

CVSS3

4.8

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

AI Score

7.1

Confidence

High

EPSS

0.003

Percentile

68.4%

JSON

When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.1.x below 7.1.31, 7.2.x below 7.2.21 and 7.3.x below 7.3.8 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.

CNA Affected

[
  {
    "product": "PHP",
    "vendor": "PHP Group",
    "versions": [
      {
        "status": "affected",
        "version": "7.1.x below 7.1.31"
      },
      {
        "status": "affected",
        "version": "7.2.x below 7.2.21"
      },
      {
        "status": "affected",
        "version": "7.3.x below 7.3.8"
      }
    ]
  }
]