// For flags

CVE-2025-43903

Ubuntu Security Notice USN-7471-1

Severity Score

4.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.

NSSCryptoSignBackend.cc en Poppler anterior a 25.04.0 no verifica las firmas adbe.pkcs7.sha1 en los documentos, lo que resulta en posibles falsificaciones de firmas.

It was discovered that poppler did not properly verify adbe.pkcs7.sha1 signatures in PDF documents. An attacker could possibly use this issue to create documents with forged signatures that are treated as legitimately signed.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-04-18 CVE Reserved
  • 2025-04-18 CVE Published
  • 2025-04-21 CVE Updated
  • 2025-05-20 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Freedesktop
Search vendor "Freedesktop"
 Poppler
Search vendor "Freedesktop" for product "Poppler"
 < 25.04.0
Search vendor "Freedesktop" for product "Poppler" and version " < 25.04.0"
en
Affected