Vulnerability Name: | CVE-2021-25634 (CCN-211145) | ||||||||||||||||||
Assigned: | 2021-10-11 | ||||||||||||||||||
Published: | 2021-10-11 | ||||||||||||||||||
Updated: | 2021-10-18 | ||||||||||||||||||
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 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. | ||||||||||||||||||
CVSS v3 Severity: | 7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) 6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
6.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
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CVSS v2 Severity: | 5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
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Vulnerability Type: | CWE-295 | ||||||||||||||||||
Vulnerability Consequences: | Gain Access | ||||||||||||||||||
References: | Source: MITRE Type: CNA CVE-2021-25634 Source: XF Type: UNKNOWN libreoffice-cve202125634-spoofing(211145) Source: DEBIAN Type: Third Party Advisory DSA-4988 Source: MISC Type: Vendor Advisory https://www.libreoffice.org/about-us/security/advisories/CVE-2021-25634 Source: CCN Type: LibreOffice Web site Timestamp Manipulation with Signature Wrapping | ||||||||||||||||||
Vulnerable Configuration: | Configuration 1: Configuration 2: Configuration RedHat 1: Configuration RedHat 2: Configuration RedHat 3: Configuration CCN 1: ![]() | ||||||||||||||||||
Oval Definitions | |||||||||||||||||||
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