Bug 1942263 (CVE-2021-28683) - CVE-2021-28683 envoyproxy/envoy: NULL pointer dereference in TLS alert code handling
Summary: CVE-2021-28683 envoyproxy/envoy: NULL pointer dereference in TLS alert code h...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-28683
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: 1941991
TreeView+ depends on / blocked
 
Reported: 2021-03-24 02:04 UTC by Mark Cooper
Modified: 2023-08-31 23:49 UTC (History)
6 users (show)

Fixed In Version: envoyproxy/envoy 1.17.2
Doc Type: ---
Doc Text:
A NULL pointer dereference vulnerability was found envoyproxy/envoy. This flaw allows an attacker to establish a TLS session that sends an invalid TLS alert code, causing a NULL pointer exception to occur that crashes the application, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-04-22 10:46:53 UTC
Embargoed:

Attachments (Terms of Use)

Description Mark Cooper 2021-03-24 02:04:00 UTC 
A null pointer dereference vulnerability was found in all versions of Envoy up to 1.17.2. If an attacker can establish a TLS session which sends an invalid TLS alert code, then this will cause an NULL pointer exception to occur crashing the application resulting in a denial of service.
Comment 1 Mark Cooper 2021-03-24 02:04:02 UTC 
Acknowledgments:

Name: the Envoy security team
Comment 5 Mark Cooper 2021-04-16 02:28:49 UTC 
External References:

https://istio.io/latest/news/security/istio-security-2021-003/
Comment 6 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 7 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 8 Product Security DevOps Team 2021-04-22 10:46:53 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-2021-28683
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