Vulnerability Monitor

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CVE-2021-39162

Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, can abnormally terminate if an H/2 GOAWAY and SETTINGS frame are received in the same IO event. This can lead to a DoS in the presence of untrusted *upstream* servers. 0.15.1 contains an upgraded envoy binary with this vulnerability patched. If only trusted upstreams are configured, there is not substantial risk of this condition being triggered.

Published

2021-09-09T22:15:09.050

Last Modified

2024-11-21T06:18:45.580

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	envoyproxy	envoy	< 1.18.4	Yes
Application	envoyproxy	envoy	1.19.0	Yes
Application	pomerium	pomerium	0.15.0	Yes

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8 Third Party Advisory ([email protected])
https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv Third Party Advisory ([email protected])
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ Not Applicable, Third Party Advisory ([email protected])
https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ Not Applicable, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)