CVE-2023-29542

2023-06-1910:03:32

mozilla

www.cve.org

cve-2023-29542

file extension security

malicious code execution

windows

firefox

thunderbird

version vulnerability

AI Score

9.1

Confidence

High

EPSS

0.003

Percentile

69.9%

JSON

A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code.

This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected. This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "112",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Firefox ESR",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "102.10",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "102.10",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]