Description
An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.
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
Not Applicable, Third Party Advisory x_refsource_misc
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg
Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
Scores
CVSS v3
7.5
EPSS
0.0169
EPSS Percentile
74.1%
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-476
Status
published
Products (2)
envoyproxy/envoy
1.16.2
envoyproxy/envoy
1.17.1
Published
May 20, 2021
Tracked Since
Feb 18, 2026