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.
Weakness
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libreoffice | Libreoffice | 7.2.0 (including) | 7.2.7 (excluding) |
| Libreoffice | Libreoffice | 7.3.0 (including) | 7.3.3 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | libreoffice-1:6.4.7.2-12.el8_7 | * |
| Red Hat Enterprise Linux 9 | RedHat | libreoffice-1:7.1.8.1-8.el9_1 | * |
| Libreoffice | Ubuntu | bionic | * |
| Libreoffice | Ubuntu | esm-infra/focal | * |
| Libreoffice | Ubuntu | focal | * |
| Libreoffice | Ubuntu | trusty | * |
| Libreoffice | Ubuntu | upstream | * |
| Libreoffice | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/112.html
- https://cwe.mitre.org/data/definitions/192.html
- https://cwe.mitre.org/data/definitions/20.html
References
- http://www.openwall.com/lists/oss-security/2022/08/13/2
- https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html
- https://www.libreoffice.org/about-us/security/advisories/cve-2022-26307
- http://www.openwall.com/lists/oss-security/2022/08/13/2
- https://lists.debian.org/debian-lts-announce/2023/03/msg00022.html
- https://www.libreoffice.org/about-us/security/advisories/cve-2022-26307