CVE-2022-26307 Weak Master Keys

2022-07-2500:00:00

CWE-326

Document Fdn.

www.cve.org

libreoffice

password encryption

brute force

vulnerability

configuration database

AI Score

8.7

Confidence

High

EPSS

0.002

Percentile

53.3%

JSON

LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulerable to a brute force attack if an attacker has access to the users stored config. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.3.

CNA Affected

[
  {
    "vendor": "The Document Foundation",
    "product": "LibreOffice",
    "versions": [
      {
        "version": "7.2",
        "status": "affected",
        "lessThan": "7.2.7",
        "versionType": "custom"
      },
      {
        "version": "7.3",
        "status": "affected",
        "lessThan": "7.3.3",
        "versionType": "custom"
      }
    ]
  }
]