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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-01-07T17:38:45

Updated: 2024-08-05T11:16:00.425Z

Reserved: 2018-10-26T00:00:00

Link: CVE-2018-18688

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-01-07T18:15:12.497

Modified: 2024-11-21T03:56:22.390

Link: CVE-2018-18688

cve-icon Redhat

No data.