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CVE-2020-12604

Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1 servicemesh-proxy security update

7.5 HighFix available

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.70%Up 1.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Record
CVE-2020-12604
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-401
Updated
2026-11-02
CVE List No score

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Record
CVE-2020-12604
Updated
2026-11-02
EUVDEUVD-2020-4906 No score

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Record
EUVD-2020-4906
Updated
2026-11-03
OSV 7.5

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Record
CVE-2020-12604
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2020:2798 7.5

Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1 servicemesh-proxy security update

Record
RHSA-2020:2798
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2020:2864 7.5

Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.0 servicemesh-proxy security update

Record
RHSA-2020:2864
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBIT-envoy-2020-12604 No score

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

Record
BIT-envoy-2020-12604
Updated
2026-11-02
OSVopenSUSE-SU-2022:0065-1 No score

Security update for envoy-proxy

This update for envoy-proxy fixes the following issues:

Update to 1.14.6:

  • CVE-2020-35471: Fixed a denial of service via dropped and truncated UDP datagrams (boo#1180121).
Record
openSUSE-SU-2022:0065-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
envoy
Bitnami
 before 1.12.5, 1.13.2 up to 1.13.3, 1.14.2 up to 1.14.3
1.12.51.13.31.14.3
servicemesh-proxy
Red Hat:service_mesh:1.1::el8
From an advisory covering 4 CVEs
 before 0:1.1.4-2.el8
0:1.1.4-2.el8
servicemesh-proxy
Red Hat:service_mesh:1.0::el8
From an advisory covering 4 CVEs
 before 0:1.0.11-1.el8
0:1.0.11-1.el8
envoy-proxy
SUSE:Package Hub 15 SP3
From an advisory covering 5 CVEs
 before 1.14.6-bp153.3.4.1
1.14.6-bp153.3.4.1
envoy-proxy
openSUSE:Leap 15.3
From an advisory covering 5 CVEs
 before 1.14.6-bp153.3.4.1
1.14.6-bp153.3.4.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-12604 is a high vulnerability (CVSS 7.5) in Envoyproxy Envoy, published July 1, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.70%, the 77th percentile. Fixed in envoy 1.12.5.

References

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