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CVE-2021-25633

Content Manipulation with Double Certificate Attack

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 7.0.6, 7.1.2
None on Exploit-DB, Metasploit or GitHub

Summary

LibreOffice supports digital signatures of ODF documents and macros within documents, presenting visual aids that no alteration of the document occurred since the last signing and that the signature is valid. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to create a digitally signed ODF document, by manipulating the documentsignatures.xml or macrosignatures.xml stream within the document to combine multiple certificate data, which when opened caused LibreOffice to display a validly signed indicator but whose content was unrelated to the signature shown. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6; 7-1 versions prior to 7.1.2.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • The Document Foundation LibreOffice

    From 7-0 · fixed in 7.0.6; From 7-1 · fixed in 7.1.2

References 2

libreoffice.org

debian.org