CVEvulnerability
CVE-2018-18688
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-01-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-347
Description
The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, an Incremental Saving vulnerability exists in multiple products. When an attacker uses the Incremental Saving feature to add pages or annotations, Body Updates are displayed to the user without any action by the signature-validation logic. This affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4. It also affects LibreOffice, Master PDF Editor, Nitro Pro, Nitro Reader, Nuance Power PDF Standard, PDF Editor 6 Pro, PDFelement6 Pro, PDF Studio Viewer 2018, PDF Studio Pro, Perfect PDF 10 Premium, and Perfect PDF Reader.
Affected configurations
• code-industry master pdf editor 5.1.12
• code-industry master pdf editor 5.1.68
• foxitsoftware foxit reader 9.4
• foxitsoftware phantompdf (>= 9.0 < 9.4)
• foxitsoftware phantompdf 8.3.9
• gonitro nitro pro 11.0.3.173
• gonitro nitro reader 5.5.9.2
• iskysoft pdf editor 6 6.4.2.3521
• iskysoft pdfelement6 6.8.0.3523
• iskysoft pdfelement6 6.8.4.3921
• libreoffice libreoffice 6.0.6.2
• libreoffice libreoffice 6.1.3.2
• nuance power pdf standard 3.0.0.17
• nuance power pdf standard 3.0.0.30
• nuance power pdf standard 7.0
• qoppa pdf studio 12.0.7
• qoppa pdf studio viewer 2018 2018.0.1
• qoppa pdf studio viewer 2018 2018.2.0
• soft-xpansion perfect pdf 10 10.0.0.1
• soft-xpansion perfect pdf reader 13.0.3
• soft-xpansion perfect pdf reader 13.1.5
• foxitsoftware foxit reader 9.1.0
• foxitsoftware foxit reader 9.2.0
• code-industry master pdf editor 5.1.24
• iskysoft pdf editor 6 6.6.2.3315
• iskysoft pdf editor 6 6.7.6.3399
• iskysoft pdfelement6 6.7.1.3355
• iskysoft pdfelement6 6.7.6.3399
• libreoffice libreoffice 6.1.0.3
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://pdf-insecurity.org/signature/evaluation_2018.html Third Party Advisory
- https://pdf-insecurity.org/signature/signature.html Third Party Advisory
- https://www.foxitsoftware.com/support/security-bulletins.php Vendor Advisory
- https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/ Third Party Advisory
- https://pdf-insecurity.org/signature/evaluation_2018.html Third Party Advisory
- https://pdf-insecurity.org/signature/signature.html Third Party Advisory
- https://www.foxitsoftware.com/support/security-bulletins.php Vendor Advisory
- https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/ Third Party Advisory