Generic UDP Encapsulation (GUE) (IETF Draft) do not validate or verify the source of a network packet
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.9%
exploitation probability
0.9%top 45% of all CVEs
observed exploitation
nono source reports it
In short
Generic UDP Encapsulation (GUE) does not verify where network packets actually come from, allowing attackers to forge packets and send fake traffic through exposed network interfaces, potentially bypassing security controls.
Technical detail
GUE fails to validate packet source authentication, enabling IP spoofing attacks on exposed network interfaces. An unauthenticated attacker can craft and inject arbitrary encapsulated traffic, bypassing access controls and causing unexpected routing behavior or network redirection.
Summary generated and translated by AI from the official description.
Proposed Generic UDP Encapsulation (GUE) (IETF Draft) do not validate or verify the source of a network packet allowing an attacker to spoof and route arbitrary traffic via an exposed network interface that can lead to spoofing, access control bypass, and other unexpected network behaviors.
This can be considered similar to CVE-2020-10136.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
IETF · draft-ietf-intarea-gue-09