Envoy Crashes in Proxy Protocol with IPv6 Addresses
CVE-2024-23325

7.5HIGH

Key Information:

Vendor

Envoyproxy

Status
Envoy
Vendor
CVE Published:
9 February 2024

What is CVE-2024-23325?

Envoy, a high-performance edge and service proxy, contains a vulnerability that leads to crashes when processing requests with unsupported address types, particularly under certain network configurations. This issue arises when a host has IPv6 functionality disabled while configured with a listener utilizing the proxy protocol. When a client presents its IPv6 address, Envoy becomes susceptible to crashing, despite the underlying connection possibly being IPv4 only. This vulnerability has been resolved in versions 1.26.7, 1.27.3, 1.28.1, and 1.29.1, and users are strongly encouraged to update to these releases as there are currently no workarounds 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/bacd3107455b8d...
x_refsource_MISC

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.