CVE-2021-39204

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

09/09/2021

Last modified:

27/09/2021

Description

Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, incorrectly handles resetting of HTTP/2 streams with excessive complexity. This can lead to high CPU utilization when a large number of streams are reset. This can result in a DoS condition. Pomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:envoyproxy:envoy::::::::		1.16.4 (including)
cpe:2.3:a:envoyproxy:envoy::::::::	1.17.0 (including)	1.17.4 (excluding)
cpe:2.3:a:envoyproxy:envoy::::::::	1.18.0 (including)	1.18.4 (excluding)
cpe:2.3:a:envoyproxy:envoy:1.19.0:::::::*
cpe:2.3:a:pomerium:pomerium::::::::		0.14.8 (excluding)
cpe:2.3:a:pomerium:pomerium:0.15.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-39204

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools