CVE-2021-28682
HIGHEnvoy through 1.71.1 - Integer Overflow via gRPC Timeout Value
Title source: llmDescription
An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable integer overflow in which a very large grpc-timeout value leads to unexpected timeout calculations.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_misc
https://github.com/envoyproxy/envoy/releases
Vendor Advisory x_refsource_misc
https://blog.envoyproxy.io
Exploit, Third Party Advisory x_refsource_misc
https://github.com/envoyproxy/envoy/blob/15e3b9dbcc9aaa9d391fa8033904aad1ea1ae70d/api/envoy/api/v2/cluster.proto#L36
Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg
Scores
CVSS v3
7.5
EPSS
0.0204
EPSS Percentile
78.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-190
Status
published
Products (4)
envoyproxy/envoy
1.14.6
envoyproxy/envoy
1.15.3
envoyproxy/envoy
1.16.2
envoyproxy/envoy
1.17.1
Published
May 20, 2021
Tracked Since
Feb 18, 2026