CVE-2023-35941
High
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's domain configuration.
SeverityHigh
CVSS8.6
Exploit probability—
Product
Envoy
PublishedJul 25, 2023
First seenJul 25, 2023
Weakness typeCWE-116CWE-116
How to fix
Update
- envoyproxy envoy1.23.12, 1.24.10, 1.25.9, 1.26.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| envoyproxy envoy | 1.23.0 ≤ v < 1.23.12, 1.24.0 ≤ v < 1.24.10, 1.25.0 ≤ v < 1.25.9, 1.26.0 ≤ v < 1.26.4 | 1.23.12, 1.24.10, 1.25.9, 1.26.4 |
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