CVE-2022-21655: Incorrect handling of internal redirects results in crash in Envoy
First published: Fri Feb 04 2022(Updated: )
A flaw was found in envoy. Due to incorrect handling of the common router, a segfault is possible when internal redirects are routes with a direct response entry.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/envoy | <1.18.6 | 1.18.6 |
| redhat/envoy | <1.19.3 | 1.19.3 |
| redhat/envoy | <1.20.2 | 1.20.2 |
| redhat/envoy | <1.21.1 | 1.21.1 |
| redhat/servicemesh-proxy | <0:2.0.9-3.el8 | 0:2.0.9-3.el8 |
| redhat/servicemesh-proxy | <0:2.1.2-4.el8 | 0:2.1.2-4.el8 |
| Envoyproxy Envoy | <1.18.6 | |
| Envoyproxy Envoy | >=1.19.0<1.19.3 | |
| Envoyproxy Envoy | >=1.20.0<1.20.2 | |
| Envoyproxy Envoy | >=1.21.0<1.21.1 |
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Reference Links
- https://github.com/envoyproxy/envoy/commit/177d608155ba8b11598b9bbf8240e90d8c350682
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg
- https://access.redhat.com/errata/RHSA-2022:1276
- https://access.redhat.com/errata/RHSA-2022:1275
- https://access.redhat.com/security/cve/cve-2022-21655
- https://bugzilla.redhat.com/show_bug.cgi?id=2050757
- https://www.cve.org/CVERecord?id=CVE-2022-21655 https://nvd.nist.gov/vuln/detail/CVE-2022-21655 https://github.com/envoyproxy/envoy/security/advisories/GHSA-7r5p-7fmh-jxpg
Frequently Asked Questions
What is CVE-2022-21655?
CVE-2022-21655 is a vulnerability in Envoy that can result in a denial of service due to a segfault in the common router.
How severe is CVE-2022-21655?
CVE-2022-21655 has a severity value of 7.5, which is considered high.
What is the affected software for CVE-2022-21655?
The affected software for CVE-2022-21655 includes Red Hat Service Mesh Proxy versions 0:2.0.9-3.el8 and 0:2.1.2-4.el8, as well as Envoy versions up to 1.21.1.
How can I fix CVE-2022-21655?
To fix CVE-2022-21655, you should update your Envoy installation to version 1.18.6, 1.19.3, 1.20.2, or 1.21.1.
What is the workaround for CVE-2022-21655?
As a workaround for CVE-2022-21655, you can turn off internal redirects in Envoy.
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