CVE-2023-36673

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Summary

CVECVE-2023-36673
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-08-09 23:15:00 UTC
Updated2023-10-31 09:15:00 UTC
DescriptionAn issue was discovered in Avira Phantom VPN through 2.23.1 for macOS. The VPN client insecurely configures the operating system such that all IP traffic to the VPN server's IP address is sent in plaintext outside the VPN tunnel, even if this traffic is not generated by the VPN client, while simultaneously using plaintext DNS to look up the VPN server's IP address. This allows an adversary to trick the victim into sending traffic to arbitrary IP addresses in plaintext outside the VPN tunnel. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "ServerIP attack, combined with DNS spoofing, that can leak traffic to an arbitrary IP address" rather than to only Avira Phantom VPN.

Risk And Classification

Problem Types: CWE-319

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Avira Phantom Vpn All All All All

References

ReferenceSourceLinkTags
Download free VPN - surf anonymously | Avira MISC www.avira.com
Security Advisory CONFIRM psirt.global.sonicwall.com
TunnelCrack: Widespread design flaws in VPN clients MISC tunnelcrack.mathyvanhoef.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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