CVE-2020-7060 global buffer-overflow in mbfl_filt_conv_big5_wchar

2020-01-2100:00:00

CWE-125

php

www.cve.org

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

Confidence

High

EPSS

0.004

Percentile

73.4%

JSON

When using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or crash.

CNA Affected

[
  {
    "product": "PHP",
    "vendor": "PHP Group",
    "versions": [
      {
        "lessThan": "7.2.27",
        "status": "affected",
        "version": "7.2.x",
        "versionType": "custom"
      },
      {
        "lessThan": "7.3.14",
        "status": "affected",
        "version": "7.3.x",
        "versionType": "custom"
      },
      {
        "lessThan": "7.4.2",
        "status": "affected",
        "version": "7.4.x",
        "versionType": "custom"
      }
    ]
  }
]