CVE-2021-25636 (GCVE-0-2021-25636)

Vulnerability from cvelistv5 – Published: 2022-02-22 00:00 – Updated: 2024-08-03 20:11
VLAI
Title
Incorrect trust validation of signature with ambiguous KeyInfo children
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 contain both "X509Data" and "KeyValue" children of the "KeyInfo" tag, which when opened caused LibreOffice to verify using the "KeyValue" but to report verification with the unrelated "X509Data" value. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.5.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Document Fdn. CNA
CNA scorecard C 75/100 over 21 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
The Document Foundation LibreOffice Affected: 7.2 , < 7.2.5 (custom)
guessed Create a notification for this product.
Credits
Thanks to NDS of Ruhr University Bochum for discovering and reporting this problem.
Show details on NVD website
To clipboard 

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