Bug 1942280 (CVE-2021-29258)

Summary: CVE-2021-29258 envoyproxy/envoy: crash with empty HTTP/2 metadata map
Product: [Other] Security Response Reporter: Mark Cooper <mcooper>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: askrabec, jwendell, kconner, rcernich, security-response-team, twalsh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: envoyproxy/envoy 1.17.2 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in envoyproxy. An attacker, able to craft an HTTP2 request that specifies an empty metadata map, can crash envoy resulting in a denial of service due to the null reference. The highest threat from this vulnerability is to system availability.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-04-22 10:47:02 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 1941991    

Description Mark Cooper 2021-03-24 03:35:32 UTC
A null reference vulnerability was found in all versions of Envoy up to 1.17.2. If an attacker can craft a HTTP2 request that specifies an empty metadata map[1], then envoy will attempt to process this and crash, resulting in a denial of service.

[1] - https://github.com/envoyproxy/envoy/blob/main/source/docs/h2_metadata.md

Comment 1 Mark Cooper 2021-03-24 03:35:38 UTC

Name: the Envoy security team

Comment 8 errata-xmlrpc 2021-04-22 08:58:45 UTC
This issue has been addressed in the following products:

  OpenShift Service Mesh 2.0

Via RHSA-2021:1324 https://access.redhat.com/errata/RHSA-2021:1324

Comment 9 errata-xmlrpc 2021-04-22 09:01:31 UTC
This issue has been addressed in the following products:

  OpenShift Service Mesh 1.1

Via RHSA-2021:1322 https://access.redhat.com/errata/RHSA-2021:1322

Comment 10 Product Security DevOps Team 2021-04-22 10:47:02 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):