CVE-2022-21655

Incorrect handling of internal redirects results in crash in Envoy

Published Feb 22, 2022 CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-26873 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 23, 2025, 7:01 PM
Reserved
Nov 16, 2021, 12:00 AM
Status
Modified
Published
Feb 22, 2022, 11:15 PM
Modified
Jun 17, 2026, 4:26 AM
Severity
Important
Public date
Feb 22, 2022, 7:00 AM