Bug 2362574 (CVE-2025-2866)

Summary:	CVE-2025-2866 LibreOffice: PDF signature forgery with adbe.pkcs7.sha1 SubFilter
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in LibreOffice related to cryptographic signature verification in PDFs. This vulnerability allows attackers to spoof digital signatures, possibly leading to misleading or falsified documents and potentially affecting trust in digitally signed PDFs.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2362641, 2362642, 2362643
Bug Blocks:

Description OSIDB Bzimport 2025-04-27 20:01:13 UTC

Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation.




In the affected versions of LibreOffice a flaw in the verification code for adbe.pkcs7.sha1 signatures could cause invalid signatures to be accepted as valid




This issue affects LibreOffice: from 24.8 before < 24.8.6, from 25.2 before < 25.2.2.