by Kastro
Paper/Archive/CVE-2022-29226

CVE-2022-29226

envoyproxy envoy — Trivial authentication bypass in Envoy

EPSS 1%CVSS 10.0
critical.is priorityof 100
44
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 71.6.716 × 2014.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Envoy is a cloud-native high-performance proxy. In versions prior to 1.22.1 the OAuth filter implementation does not include a mechanism for validating access tokens, so by design when the HMAC signed cookie is missing a full authentication flow should be triggered. However, the current implementation assumes that access tokens are always validated thus allowing access in the presence of any access token attached to the request. Users are advised to upgrade. There is no known workaround for this issue.

Affected

ProductAffectedFixed inSource
envoy< 1.22.1–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/envoyproxy/envoy/commit/7ffda4e809dec74449ebc330cebb9d2f4ab61360refgithub.com/envoyproxy/envoy/security/advisories/GHSA-h45c-2f94-prxh