// For flags

CVE-2022-26307

Weak Master Keys

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

LibreOffice admite el almacenamiento de contraseñas para conexiones web en la base de datos de configuración del usuario. Las contraseñas almacenadas son cifradas con una única clave maestra proporcionada por el usuario. Se presentaba un fallo en LibreOffice en el que la clave maestra estaba codificada inapropiadamente resultando en un debilitamiento de su entropía de 128 a 43 bits haciendo que las contraseñas almacenadas sean vulnerables a un ataque de fuerza bruta si un atacante presenta acceso a la configuración almacenada del usuario. Este problema afecta a: The Document Foundation LibreOffice versiones 7.2 anteriores a 7.2.7; versiones 7.3 anteriores a 7.3.3

A flaw was found in LibreOffice, where the master key was poorly encoded, resulting in weakening its entropy from 128 to 43 bits. This issue makes the stored passwords that are encrypted with a single master key provided by the user vulnerable to a brute force attack if an attacker has access to the user’s stored config.

*Credits: OpenSource Security GmbH on behalf of the German Federal Office for Information Security
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-02-28 CVE Reserved
  • 2022-07-25 CVE Published
  • 2024-06-10 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-326: Inadequate Encryption Strength
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Libreoffice
Search vendor "Libreoffice"
Libreoffice
Search vendor "Libreoffice" for product "Libreoffice"
>= 7.2.0 < 7.2.7
Search vendor "Libreoffice" for product "Libreoffice" and version " >= 7.2.0 < 7.2.7"
-
Affected
Libreoffice
Search vendor "Libreoffice"
Libreoffice
Search vendor "Libreoffice" for product "Libreoffice"
>= 7.3.0 < 7.3.3
Search vendor "Libreoffice" for product "Libreoffice" and version " >= 7.3.0 < 7.3.3"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected