Input validation error in envoy - #VU145854
Published: December 17, 2020 / Updated: August 26, 2026
Vulnerability identifier: #VU145854
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in udp proxy when processing oversized udp datagrams. A remote attacker can send a specially crafted udp datagram larger than 1500 bytes to cause a denial of service.
Affected software
envoy
Remediation
Install security update from vendor's website.
envoy - addressed in versions 1.13.7, 1.14.6, 1.15.3, 1.16.1