Bug 1996935 (CVE-2021-32781)

Summary: CVE-2021-32781 envoyproxy/envoy: denial of service when using extensions that modify request or response sizes
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: jwendell, kconner, rcernich, security-response-team, twalsh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: envoyproxy/envoy 1.19.1, envoyproxy/envoy 1.18.4, envoyproxy/envoy 1.17.4, envoyrproxy/envoy 1.16.5 Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds memory read vulnerability was found in envoyproxy/envoy. When using one of the following envoy extensions, it is possible to modify and increase the request or response body size of the following: the decompressor, json-transcoder, grpc-web, or other proprietary extensions. This flaw allows an attacker to read invalid memory and cause envoy to crash, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-08-25 15:35:09 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: 1996910    

Description Mark Cooper 2021-08-24 03:52:18 UTC
Envoy proxy 1.19.1 contains a vulnerability in the following components:
 - decompressor
 - json-transcoder 
 - grpc-webextension
 - proprietary extensions
Which allows for an increase in the request size and causes Envoy to reference de-allocated memory resulting in a denial of service.

Comment 2 errata-xmlrpc 2021-08-25 09:34:44 UTC
This issue has been addressed in the following products:

  OpenShift Service Mesh 1.1

Via RHSA-2021:3273 https://access.redhat.com/errata/RHSA-2021:3273

Comment 3 errata-xmlrpc 2021-08-25 09:35:32 UTC
This issue has been addressed in the following products:

  OpenShift Service Mesh 2.0

Via RHSA-2021:3272 https://access.redhat.com/errata/RHSA-2021:3272

Comment 4 Product Security DevOps Team 2021-08-25 15:35:09 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):