CVE-2021-32778

mediumPriorität · verfolgen · 30EPSS 0.012 · 69. PerzentilEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.23% (69th) EPSS

CVSS 5 · medium

Is it mine?

55 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · bewertet 2026-10-27

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy’s procedure for resetting a HTTP/2 stream has O(N^2) complexity, leading to high CPU utilization when a large number of streams are reset. Deployments are susceptible to Denial of Service when Envoy is configured with high limit on H/2 concurrent streams. An attacker wishing to exploit this vulnerability would require a client opening and closing a large number of H/2 streams. Envoy versions 1.19.1, 1.18.4, 1.17.4, 1.16.5 contain fixes to reduce time complexity of resetting HTTP/2 streams. As a workaround users may limit the number of simultaneous HTTP/2 dreams for upstream and downstream peers to a low number, i.e. 100.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenservicemesh-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-0:2.1.0-5.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-cni-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-cni-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-cni-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-0:7.2.1-2.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-0:7.2.1-2.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-0:7.2.1-2.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-0:7.2.1-2.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-debuginfo-0:7.2.1-2.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-debuginfo-0:7.2.1-2.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-grafana-debuginfo-0:7.2.1-2.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-operator-0:2.1.0-4.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-operator-0:2.1.0-4.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-operator-0:2.1.0-4.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-operator-0:2.1.0-4.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-agent-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-agent-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-agent-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-discovery-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-discovery-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-pilot-discovery-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-prometheus-0:2.23.0-1.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-prometheus-0:2.23.0-1.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-prometheus-0:2.23.0-1.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-prometheus-0:2.23.0-1.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-0:2.1.0-13.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-0:2.1.0-13.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-0:2.1.0-13.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-0:2.1.0-13.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debuginfo-0:2.1.0-13.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debuginfo-0:2.1.0-13.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debuginfo-0:2.1.0-13.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debugsource-0:2.1.0-13.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debugsource-0:2.1.0-13.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-debugsource-0:2.1.0-13.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-proxy-wasm-0:2.1.0-13.el8.noarch as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-ratelimit-0:2.1.0-1.el8.ppc64le as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-ratelimit-0:2.1.0-1.el8.s390x as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-ratelimit-0:2.1.0-1.el8.src as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051
Behobenservicemesh-ratelimit-0:2.1.0-1.el8.x86_64 as a component of OpenShift Service Mesh 2.1redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHEA-2021:4051

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · security-advisories@github.comAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Red Hat Product Security US

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-834USprimärCWE-400US

betroffene Produkte (55)

Betroffene Produkte und Versionsbereiche.

envoyproxy envoy1.16.0, → 1.16.5enisa_euvdEU
envoyproxy envoy1.17.0, → 1.17.4enisa_euvdEU
envoyproxy envoy1.18.0, → 1.18.4enisa_euvdEU
envoyproxy envoy1.19.0, → 1.19.1enisa_euvdEU
envoyproxy envoy1.16.0 → 1.16.5nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy1.17.0 → 1.17.4nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy1.18.0 → 1.18.4nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
envoyproxy envoy= 1.19.0nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
Bitnami envoy1.16.0 → 1.16.5osvUSpkg:bitnami/envoy
Bitnami envoy1.17.0 → 1.17.4osvUSpkg:bitnami/envoy
Bitnami envoy1.18.0 → 1.18.4osvUSpkg:bitnami/envoy
Bitnami envoy1.19.0 → 1.19.1osvUSpkg:bitnami/envoy
servicemesh-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-0:2.1.0-5.el8.src as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-cni-0:2.1.0-5.el8.ppc64le as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-cni-0:2.1.0-5.el8.s390x as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-cni-0:2.1.0-5.el8.x86_64 as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS
servicemesh-grafana-0:7.2.1-2.el8.ppc64le as a component of OpenShift Service Mesh 2.1alle Versionenfixedredhat_csafUS

20 von 55 angezeigt

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

RHEA-2021:4051Red Hat Enhancement Advisory: Red Hat OpenShift Service Mesh 2.1.0 RPMs2021-11-02csaf · redhat_csafUS
Red Hat OpenShift Service Mesh 2.1.0
BIT-envoy-2021-32778Excessive CPU utilization when closing HTTP/2 streams2024-03-06vendor · osvUS
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy’s procedure for resetting a HTTP/2 stream has O(N^2) complexity, leading to high CPU utilization when a large number of streams are reset. Deployments are susceptible to Denial of Service when Envoy is configured with high limit on H/2 concurrent streams. An attacker wishing to exploit this vulnerability would require a client opening and closing a large number of H/2 streams. Envoy versions 1.19.1, 1.18.4, 1.17.4, 1.16.5 contain fixes to reduce time complexity of resetting HTTP/2 streams. As a workaround users may limit the number of simultaneous HTTP/2 dreams for upstream and downstream peers to a low number, i.e. 100.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd osv nvd redhat_csaf NVD CVE.org MITRE

veröffentlicht 2021-08-24geändert 2026-06-17

verwandt (140)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2017-12587US	high8.8	2.03% (81st)	—	2017-08-06
ImageMagick 7.0.6-1 has a large loop vulnerability in the ReadPWPImage function in coders\pwp.c.
CVE-2021-35515US	high7.5	11.6% (96th)	—	2021-07-13
When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of…
CVE-2023-30226US	medium5.5	0.35% (29th)	Exploit	2023-07-12
An issue was discovered in function get_gnu_verneed in rizinorg Rizin prior to 0.5.0 verneed_entry allows attackers to cause a denial of service via crafted elf file.
CVE-2021-39924US	high7.5	5.29% (93rd)	—	2021-11-19
Large loop in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
CVE-2023-38200US	high7.5	1.45% (73rd)	—	2023-07-24
A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker…

+135 weitere

Referenzen (8)

Externe Belege — Patches, Meldungen, Analysen.

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