CVE-2022-34471

2022-12-2200:00:00

mozilla

www.cve.org

addon update

version verification

downgrade attack

firefox vulnerability

7.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.0%

JSON

When downloading an update for an addon, the downloaded addon update’s version was not verified to match the version selected from the manifest. If the manifest had been tampered with on the server, an attacker could trick the browser into downgrading the addon to a prior version. This vulnerability affects Firefox < 102.

CNA Affected

[
  {
    "vendor": "Mozilla",
    "product": "Firefox",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "102",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]