CVE-2023-27496 — Improper Input Validation in Envoy

CWE-20 — Improper Input Validation2 documents2 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 92.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Envoyproxy Envoy
Timeline
PublishedApr 4

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The …

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDenvoyproxy/envoy1.23.0 — 1.23.6+3
▶CVEListV5envoyproxy/envoy>= 1.23.0, < 1.23.6, >= 1.24.0, < 1.24.4, >= 1.25.0, < 1.25.3+2

📋Vendor Advisories

1
Red Hat
envoy: Crash when a redirect url without a state param is received in the oauth filter↗2023-04-04
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CVE-2023-27496 — Improper Input Validation in Envoy | cvebase