Bug 1996943 (CVE-2021-32780) - CVE-2021-32780 envoyproxy/envoy: denial of service when receiving a GOAWAY frame followed by a SETTINGS frame
Summary: CVE-2021-32780 envoyproxy/envoy: denial of service when receiving a GOAWAY fr...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-32780
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 04:18 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
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Doc Text:
A vulnerability was found in envoyproxy/envoy, in which the application terminates abruptly. The error occurs when envoy receives a `GOAWAY` frame followed by a `SETTINGS` frame with the parameter `SETTING_MAX_CONCURRENT_STREAMS` to set 0. This flaw allows an attacker to cause a denial of service on the proxy. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-08-25 03:34:54 UTC
Embargoed:

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Description Mark Cooper 2021-08-24 04:18:02 UTC 
Envoy proxy 1.18 through 1.19.1 contains a denial of service vulnerability. If a service sends the `GO_AWAY` frame followed by a `SETTINGS` frame with the parameter `SETTING_MAX_CONCURRENT_STREAMS` to set 0, Envoy may terminate.
Comment 1 Product Security DevOps Team 2021-08-25 03:34:54 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-2021-32780
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