Bug 1996935 (CVE-2021-32781) - CVE-2021-32781 envoyproxy/envoy: denial of service when using extensions that modify request or response sizes
Summary: CVE-2021-32781 envoyproxy/envoy: denial of service when using extensions that...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-32781
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1996910
TreeView+ depends on / blocked
 
Reported: 2021-08-24 03:52 UTC by Mark Cooper
Modified: 2023-09-01 01:23 UTC (History)
5 users (show)

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.
Clone Of:
Environment:
Last Closed: 2021-08-25 15:35:09 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3272 0 None None None 2021-08-25 09:35:33 UTC
Red Hat Product Errata RHSA-2021:3273 0 None None None 2021-08-25 09:34:46 UTC

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):

https://access.redhat.com/security/cve/cve-2021-32781
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