Envoy Edge/Middle/Service Proxy Vulnerability
CVE-2024-23324

7.5HIGH

Key Information:

Vendor

envoyproxy

Status
envoy
Vendor
CVE Published:
9 February 2024

What is CVE-2024-23324?

The vulnerability in Envoy Proxy enables an external authentication bypass through the manipulation of downstream connections. This issue arises when clients force invalid gRPC requests to be processed by the ext_authz service, specifically when the failure_mode_allow option is enabled. Consequently, the ext_authz security checks are circumvented, posing a significant risk to systems utilizing affected versions of Envoy Proxy. Users are strongly urged to upgrade to the patched versions 1.29.1, 1.28.1, 1.27.3, or 1.26.7 to secure their environments, as no workarounds are available.

Affected Version(s)

envoy >= 1.29.0, < 1.29.1 < 1.29.0, 1.29.1

envoy >= 1.28.0, < 1.28.1 < 1.28.0, 1.28.1

envoy >= 1.27.0, < 1.27.3 < 1.27.0, 1.27.3

References

https://github.com/envoyproxy/envoy/security/advisories/G...
x_refsource_CONFIRM
https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.