CVE-2023-35838
Last modified
CVE-2023-35838 is a medium-severity vulnerability rated 5.7/10 on the CVSS scale. 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. EPSS estimates a 0.81% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wireguard | Wireguard | 0.5.3 |
References
- https://tunnelcrack.mathyvanhoef.com/details.htmlExploit, Third Party Advisory
- https://wireguard.comProduct
- https://tunnelcrack.mathyvanhoef.com/details.htmlExploit, Third Party Advisory
- https://wireguard.comProduct
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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