CVE-2022-26307
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.35% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-326
- Affected
- libreoffice/libreoffice · debian/debian linux
- Source
- security@documentfoundation.org
References
- http://www.openwall.com/lists/oss-security/2022/08/13/2Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00022.htmlMailing List, Third Party Advisory
- https://www.libreoffice.org/about-us/security/advisories/cve-2022-26307Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/08/13/2Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/03/msg00022.htmlMailing List, Third Party Advisory
- https://www.libreoffice.org/about-us/security/advisories/cve-2022-26307Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.