CVE-2022-26307: Weak Master Keys

Published Jul 25, 2022
·
Updated

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.

Affected Software

17 affected componentsFixes available
LibreOffice Libreoffice>=7.2.0<7.2.7
LibreOffice Libreoffice>=7.3.0<7.3.3
Debian Debian Linux=10.0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
alpine/libreoffice>=7.2.0<7.2.7.2-r0
7.2.7.2-r0
debian/libreoffice<1:7.3.3~rc1-2
1:7.3.3~rc1-2
debian/libreoffice<1:7.3.3~rc1-2
1:7.3.3~rc1-2
debian/libreoffice<1:7.3.3~rc1-2
1:7.3.3~rc1-2
debian/libreoffice
4:7.4.7-1+deb12u144:7.4.7-1+deb12u134:25.2.3-2+deb13u64:25.2.3-2+deb13u84:26.8.2.2-2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade alpine/libreoffice to a version that resolves this vulnerability.

    Fixed in 7.2.7.2-r0
  2. Upgrade

    Upgrade debian/libreoffice to a version that resolves this vulnerability.

    Fixed in 1:7.3.3~rc1-2
  3. Upgrade

    Upgrade debian/libreoffice to a version that resolves this vulnerability.

    Fixed in 4:7.4.7-1+deb12u14Fixed in 4:7.4.7-1+deb12u13Fixed in 4:25.2.3-2+deb13u6Fixed in 4:25.2.3-2+deb13u8Fixed in 4:26.8.2.2-2
  4. Upgrade

    Upgrade LibreOffice to a version that resolves this vulnerability.

    Fixed in 7.2.7
  5. Upgrade

    Upgrade LibreOffice to a version that resolves this vulnerability.

    Fixed in 7.3.3

Event History

Jul 25, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
via NVD·03:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software
Aug 16, 2022
Data Sourced
via Red Hat·09:23 AM
DescriptionSeverityAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2022-26307?

CVE-2022-26307 is a vulnerability in LibreOffice that allows the weakening of the entropy of the master key used to encrypt stored passwords for web connections.

2

How does CVE-2022-26307 affect LibreOffice?

CVE-2022-26307 affects LibreOffice versions 7.2.0 to 7.2.7 and versions 7.3.0 to 7.3.3, as well as Debian Linux 10.0.

3

What is the severity of CVE-2022-26307?

CVE-2022-26307 has a severity rating of 8.8 (high).

4

How can I fix the CVE-2022-26307 vulnerability?

To fix the CVE-2022-26307 vulnerability, users should update their LibreOffice software to the latest version available.

5

Where can I find more information about CVE-2022-26307?

More information about CVE-2022-26307 can be found on the Openwall and Debian websites, as well as the LibreOffice security advisories page.

Company

Resources

Contact

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