CVE-2021-25634 Timestamp Manipulation with Signature Wrapping

2021-10-1100:00:00

CWE-295

Document Fdn.

www.cve.org

6.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

43.6%

JSON

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 modify a digitally signed ODF document to insert an additional signing time timestamp which LibreOffice would incorrectly present as a valid signature signed at the bogus signing time. This issue affects: The Document Foundation LibreOffice 7-0 versions prior to 7.0.6; 7-1 versions prior to 7.1.2.

CNA Affected

[
  {
    "product": "LibreOffice",
    "vendor": "The Document Foundation",
    "versions": [
      {
        "lessThan": "7.0.6",
        "status": "affected",
        "version": "7-0",
        "versionType": "custom"
      },
      {
        "lessThan": "7.1.2",
        "status": "affected",
        "version": "7-1",
        "versionType": "custom"
      }
    ]
  }
]