CVE-2018-18688

The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures

published January 7, 2021

CVSS
—
EPSS
1%
Percentile
66.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01146 · 66.3th percentile
Published
2021-01-07T17:38Z
EPSS history
Timeline
  • 07 JAN 17:38Z
    The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures
    cvelistv5