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    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.

    Published:Jan 7, 2021
    Last Modified:Nov 21, 2024
    EPS:Jan 7, 2021
    EPSS Score:0.00004
    CVSS Score:5.3

    Affected Products

    Vendor
    Apple
    Product
    Macos
    Vendor
    Code-industry
    Product
    Master Pdf Editor
    Vendor
    Foxitsoftware
    Product
    Foxit Reader
    Vendor
    Foxitsoftware
    Product
    Phantompdf
    Vendor
    Gonitro
    Product
    Nitro Pro
    Vendor
    Gonitro
    Product
    Nitro Reader
    Vendor
    Iskysoft
    Product
    Pdf Editor 6
    Vendor
    Iskysoft
    Product
    Pdfelement6
    Vendor
    Libreoffice
    Product
    Libreoffice
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Nuance
    Product
    Power Pdf Standard
    Vendor
    Qoppa
    Product
    Pdf Studio
    Vendor
    Qoppa
    Product
    Pdf Studio Viewer 2018
    Vendor
    Soft-xpansion
    Product
    Perfect Pdf 10
    Vendor
    Soft-xpansion
    Product
    Perfect Pdf Reader

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High