Bug 2050746 (CVE-2021-43825) - CVE-2021-43825 envoy: Use-after-free when response filters increase response data
Summary: CVE-2021-43825 envoy: Use-after-free when response filters increase response ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-43825
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2050760
TreeView+ depends on / blocked
 
Reported: 2022-02-04 15:04 UTC by Pedro Sampaio
Modified: 2023-09-01 02:57 UTC (History)
6 users (show)

Fixed In Version: envoy 1.18.6, envoy 1.19.3, envoy 1.20.2, envoy 1.21.1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in envoy. If the amount of buffered data by envoy goes over the limit, the buffer may overflow while a response is being processed by the filter chain. This issue possibly causes the operation to abort incorrectly, resulting in the access of a freed memory block.
Clone Of:
Environment:
Last Closed: 2022-04-07 20:28:25 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:1275 0 None None None 2022-04-07 18:03:47 UTC
Red Hat Product Errata RHSA-2022:1276 0 None None None 2022-04-07 17:59:10 UTC

Description Pedro Sampaio 2022-02-04 15:04:40 UTC 
Use-after-free when response filters increase response data, and increased data exceeds downstream buffer limits.
Comment 2 errata-xmlrpc 2022-04-07 17:59:07 UTC 
This issue has been addressed in the following products:

  OpenShift Service Mesh 2.0

Via RHSA-2022:1276 https://access.redhat.com/errata/RHSA-2022:1276
Comment 3 errata-xmlrpc 2022-04-07 18:03:44 UTC 
This issue has been addressed in the following products:

  OpenShift Service Mesh 2.1

Via RHSA-2022:1275 https://access.redhat.com/errata/RHSA-2022:1275
Comment 4 Product Security DevOps Team 2022-04-07 20:28:24 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-2021-43825
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