CVE-2021-29258 Information

Description

An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata because an empty METADATA map triggers a Reachable Assertion.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/envoyproxy/envoy-setec/pull/230 https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg https://blog.envoyproxy.io https://github.com/envoyproxy/envoy/releases/tag/v1.14.0 https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5