SB2022040430 - SUSE update for libreoffice
Published: April 4, 2022
Security Bulletin ID
SB2022040430
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper certificate validation (CVE-ID: CVE-2021-25636)
The vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to improper certificate validation when processing digital signatures of ODF documents. A remote attacker can modify the documentsignatures.xml or macrosignatures.xml stream within the document to contain both "X509Data" and "KeyValue" children of the "KeyInfo" tag[1], which when opened caused LibreOffice to verify using the "KeyValue" but to report verification with the unrelated "X509Data" value.
Remediation
Install update from vendor's website.