Input validation error in envoy - CVE-2023-27496
Published: April 5, 2023 / Updated: April 6, 2023
Vulnerability identifier: #VU74473
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27496
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when a redirect url without a state param is received in the oauth filter. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
envoy
Amazon Linux AMI
Istio
OpenShift Service Mesh
Amazon Linux AMI
Istio
OpenShift Service Mesh
How to mitigate CVE-2023-27496
Install updates from vendor's website.
envoy - addressed in versions 1.22.10, 1.23.7, 1.24.5, 1.25.4
Istio - addressed in versions 1.15.7, 1.16.4, 1.17.2
OpenShift Service Mesh - update to 2.2.9
Istio - addressed in versions 1.15.7, 1.16.4, 1.17.2
OpenShift Service Mesh - update to 2.2.9
External References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-j79q-2g66-2xv5
- https://github.com/envoyproxy/envoy/releases/tag/v1.25.4
- https://github.com/envoyproxy/envoy/releases/tag/v1.24.5
- https://github.com/envoyproxy/envoy/releases/tag/v1.23.7
- https://github.com/envoyproxy/envoy/releases/tag/v1.22.10