Vulnerability in Apple macOS
CVE-2018-18688
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.
EPSS: 0.011 (64.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Apple Macos
- Code-industry Master_pdf_editor — versions 5.1.12, 5.1.68, 5.1.24
- Foxitsoftware Foxit_reader — versions 9.4, 9.1.0, 9.2.0
- Foxitsoftware Phantompdf — versions 8.3.9
- Gonitro Nitro_pro — versions 11.0.3.173
- Gonitro Nitro_reader — versions 5.5.9.2
- Iskysoft Pdf_editor_6 — versions 6.4.2.3521, 6.6.2.3315, 6.7.6.3399
- Iskysoft Pdfelement6 — versions 6.8.0.3523, 6.8.4.3921, 6.7.1.3355
- Libreoffice — versions 6.0.6.2, 6.1.3.2, 6.1.0.3
- Linux Linux_kernel
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-18688?
- CVE-2018-18688 is a medium-severity vulnerability in Apple macOS, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.3/10. Published 2021-01-07.
- How severe is CVE-2018-18688?
- Medium severity. CVSS v3 base score is 5.3 out of 10.