CVE-2018-18688
Consequently, an Incremental Saving vulnerability exists in multiple products.
Does this matter?
Lower severity and a low EPSS score (1.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.13% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- code-industry/master pdf editor · foxitsoftware/foxit reader · foxitsoftware/phantompdf · gonitro/nitro pro · gonitro/nitro reader · iskysoft/pdf editor 6 · iskysoft/pdfelement6 · libreoffice/libreoffice · nuance/power pdf standard · qoppa/pdf studio · qoppa/pdf studio viewer 2018 · soft-xpansion/perfect pdf 10 · soft-xpansion/perfect pdf reader
- Source
- cve@mitre.org
References
- https://pdf-insecurity.org/signature/evaluation_2018.htmlThird Party Advisory
- https://pdf-insecurity.org/signature/signature.htmlThird Party Advisory
- https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
- https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/Third Party Advisory
- https://pdf-insecurity.org/signature/evaluation_2018.htmlThird Party Advisory
- https://pdf-insecurity.org/signature/signature.htmlThird Party Advisory
- https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
- https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.