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    CVE-2023-35838

    The WireGuard client 0.5.3 on Windows insecurely configures the operating system and firewall such that traffic to a local network that uses non-RFC1918 IP addresses is blocked. This allows an adversary to trick the victim into blocking IP traffic to selected IP addresses and services even while the VPN is enabled. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "LocalNet attack resulting in the blocking of traffic" rather than to only WireGuard.

    Published:Aug 9, 2023
    Last Modified:Nov 21, 2024
    EPS:Aug 9, 2023
    EPSS Score:0.00068
    CVSS Score:5.7

    Affected Products

    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Wireguard
    Product
    Wireguard

    Exploits

    https://tunnelcrack.mathyvanhoef.com/details.htmlhttps://tunnelcrack.mathyvanhoef.com/details.html

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-219 XML Routing Detour Attacks

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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