CVE-2018-18688
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.
How to fix
- foxitsoftware phantompdf9.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| code-industry master_pdf_editor | 5.1.12, 5.1.68, 5.1.24 | — |
| foxitsoftware foxit_reader | 9.4, 9.1.0, 9.2.0 | — |
| foxitsoftware phantompdf | 9.0 ≤ v < 9.4, 8.3.9 | 9.4 |
| gonitro nitro_pro | 11.0.3.173 | — |
| gonitro nitro_reader | 5.5.9.2 | — |
| iskysoft pdf_editor_6 | 6.4.2.3521, 6.6.2.3315, 6.7.6.3399 | — |
| iskysoft pdfelement6 | 6.8.0.3523, 6.8.4.3921, 6.7.1.3355, 6.7.6.3399 | — |
| libreoffice libreoffice | 6.0.6.2, 6.1.3.2, 6.1.0.3 | — |
| nuance power_pdf_standard | 3.0.0.17, 3.0.0.30, 7.0 | — |
| qoppa pdf_studio | 12.0.7 | — |
| qoppa pdf_studio_viewer_2018 | 2018.0.1, 2018.2.0 | — |
| soft-xpansion perfect_pdf_10 | 10.0.0.1 | — |
| soft-xpansion perfect_pdf_reader | 13.0.3, 13.1.5 | — |
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Attack Surface Management
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