CVE-2021-28683

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Vendor Advisory envoyproxy.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/envoyproxy/envoy/releases third party advisory
https://blog.envoyproxy.io vendor advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg third party advisory not applicable
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-28683?
CVE-2021-28683 has been scored as a high severity vulnerability.
How to fix CVE-2021-28683?
To fix CVE-2021-28683, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28683 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-28683 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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