gsd-2021-25634
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-25634


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-25634",
    "description": "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.",
    "id": "GSD-2021-25634",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-25634.html",
      "https://www.debian.org/security/2021/dsa-4988",
      "https://ubuntu.com/security/CVE-2021-25634",
      "https://advisories.mageia.org/CVE-2021-25634.html",
      "https://linux.oracle.com/cve/CVE-2021-25634.html",
      "https://access.redhat.com/errata/RHSA-2022:1766"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-25634"
      ],
      "details": "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.",
      "id": "GSD-2021-25634",
      "modified": "2023-12-13T01:23:21.597575Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@documentfoundation.org",
        "DATE_PUBLIC": "2021-10-11T00:00:00.000Z",
        "ID": "CVE-2021-25634",
        "STATE": "PUBLIC",
        "TITLE": "Timestamp Manipulation with Signature Wrapping"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "LibreOffice",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "7-0",
                          "version_value": "7.0.6"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "7-1",
                          "version_value": "7.1.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "The Document Foundation"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "NDS of Ruhr University Bochum"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          {
            "lang": "eng",
            "value": "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."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-295 Improper Certificate Validation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25634",
            "refsource": "MISC",
            "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25634"
          },
          {
            "name": "DSA-4988",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2021/dsa-4988"
          }
        ]
      },
      "solution": [
        {
          "lang": "eng",
          "value": "Update to 7.0.6 or 7.1.2 or 7.2.0"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.0.6",
                "versionStartIncluding": "7.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.1.2",
                "versionStartIncluding": "7.1.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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      },
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          "ASSIGNER": "security@documentfoundation.org",
          "ID": "CVE-2021-25634"
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        "data_type": "CVE",
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        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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                  "lang": "en",
                  "value": "CWE-295"
                }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25634",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25634"
            },
            {
              "name": "DSA-4988",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2021/dsa-4988"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-10-18T19:29Z",
      "publishedDate": "2021-10-12T14:15Z"
    }
  }
}


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