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CVE-2022-21655

HIGH
Published 2022-02-22T22:40:11.000Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.312
Higher than 31.2% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. The envoy common router will segfault if an internal redirect selects a route configured with direct response or redirect actions. This will result in a denial of service. As a workaround turn off internal redirects if direct response entries are configured on the same listener.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

envoyproxy

envoy

Affected Versions:

< 1.18.6 >= 1.19.0, < 1.19.3 >= 1.20.0, < 1.20.2 >= 1.21.0, < 1.21.1

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg
https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682
Published: 2022-02-22T22:40:11.000Z
Last Modified: 2025-04-23T19:01:21.074Z
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