CVE-2023-29532

2023-06-1909:58:03

mozilla

www.cve.org

mozilla

maintenance service

vulnerability

unsigned update file

smb server

windows

firefox

thunderbird

AI Score

6.5

Confidence

High

EPSS

Percentile

5.1%

JSON

A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server.

Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. 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"
      }
    ]
  }
]