Vulnerability Details : CVE-2022-21655
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.
Vulnerability category: Denial of service
Products affected by CVE-2022-21655
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-21655
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-21655
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2022-21655
-
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-21655
-
https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682
CVE-2022-21655 · envoyproxy/envoy@177d608 · GitHubPatch;Third Party Advisory
-
https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg
Incorrect handling of internal redirects to routes with a direct response entry · Advisory · envoyproxy/envoy · GitHubIssue Tracking;Third Party Advisory
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