p PatchFirst

CVE-2023-35838

CVE-2023-35838

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 5.7 · Medium · EPSS 0.7%

Published
Updated

Stack: system · python

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • wireguard PyPI

    Versions
    • 0.1.0
    • 0.1.1
    • 0.1.2
    • 0.1.3
    • 0.1.4
    • 0.1.5
    • 0.1.6
    • 0.2.0
    • 0.2.1
    • 0.2.2
    • 0.2.3
    • 0.2.4
    • 0.2.5
    • 0.3.0
    • 0.4.0
    Affected ranges
    • ECOSYSTEM: ≤ 0.5.3

    No fix published

  • wireguard Ubuntu:16.04:LTS

    Versions
    • 1.0.20200513-1~16.04.1
    • 1.0.20200513-1~16.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireguard Ubuntu:18.04:LTS

    Versions
    • 1.0.20200513-1~18.04.1
    • 1.0.20200513-1~18.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireguard Ubuntu:20.04:LTS

    Versions
    • 0.0.20190913-1ubuntu1
    • 0.0.20191212-1ubuntu1
    • 0.0.20191219-1ubuntu1
    • 1.0.20200102-1ubuntu1
    • 1.0.20200121-1ubuntu1
    • 1.0.20200121-2ubuntu1
    • 1.0.20200206-1ubuntu1
    • 1.0.20200206-2ubuntu1
    • 1.0.20200319-1ubuntu1
    • 1.0.20200513-1~20.04.1
    • 1.0.20200513-1~20.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireguard Ubuntu:22.04:LTS

    Versions
    • 1.0.20210424-1ubuntu1
    • 1.0.20210914-1ubuntu1
    • 1.0.20210914-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wireguard Ubuntu:24.04:LTS

    Versions
    • 1.0.20210914-1ubuntu3
    • 1.0.20210914-1ubuntu4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →