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    CVE-2021-20839

    Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS) condition to the other servers by processing a specially crafted XML document.

    Published:Nov 1, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 1, 2021
    EPSS Score:0.0042
    CVSS Score:6.5

    Affected Products

    Vendor
    Antennahouse
    Product
    Office Server Document Converter

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2021-20838 (CVSS 7.5) — Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated a…
    CVE-2018-3931 (CVSS 7.8) — In Antenna House Office Server Document Converter version V6.1 Pro MR2 for Linux64 (6,1,2018,0312), a crafted …
    CVE-2018-3932 (CVSS 8.8) — An exploitable stack-based buffer overflow exists in the Microsoft Word document conversion functionality of t…
    CVE-2018-3936 (CVSS 8.8) — In Antenna House Office Server Document Converter version V6.1 Pro MR2 for Linux64 (6,1,2018,0312), a crafted …
    CVE-2018-3929 (CVSS 7.8) — An exploitable heap corruption exists in the PowerPoint document conversion functionality of the Antenna House…
    CVE-2018-3933 (CVSS 8.8) — An exploitable out-of-bounds write exists in the Microsoft Word document conversion functionality of the Anten…
    CVE-2018-3930 (CVSS 7.8) — In Antenna House Office Server Document Converter version V6.1 Pro MR2 for Linux64 (6,1,2018,0312), a crafted …

    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