vulnerability
Foxit Reader: Improper Verification of Cryptographic Signature (CVE-2018-18688)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jan 7, 2021 | Jan 18, 2021 | Jan 18, 2021 |
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.
Solution
References
- CVE-2018-18688
- https://attackerkb.com/topics/CVE-2018-18688
- URL-https://pdf-insecurity.org/signature/evaluation_2018.html
- URL-https://pdf-insecurity.org/signature/signature.html
- URL-https://www.foxitsoftware.com/support/security-bulletins.php
- URL-https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.