CVE-2023-35941

CVSS 3.1 Score 8.6 of 10 (high)

Details

Published Jul 25, 2023
Updated: Aug 2, 2023
CWE ID 116

Summary

CVE-2023-35941 is a vulnerability that affects Envoy, an open source edge and service proxy used for cloud-native applications. The vulnerability exists in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, allowing a malicious client to construct credentials with permanent validity in certain scenarios due to rare occurrences in the OAuth2 filter's check of HMAC payload validity. The issue has been addressed in the mentioned fixed versions of Envoy. As a workaround, organizations can avoid using wildcards or prefix domain wildcards in the host's domain configuration to mitigate the vulnerability's impact. The potential danger posed by this vulnerability is rated as high, with a base severity score of 8.6 out of 10 and high confidentiality impact.

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