Published: 20/05/2021 Updated: 27/05/2021

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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

Vulnerable Product	Search on Vulmon	Subscribe to Product
envoyproxy envoy 1.14.6
envoyproxy envoy 1.15.3
envoyproxy envoy 1.16.2
envoyproxy envoy 1.17.1

A flaw was found in envoyproxy An attacker, able to craft an HTTP2 request that specifies an empty metadata map, can crash envoy resulting in a denial of service due to the null reference The highest threat from this vulnerability is to system availability ...

Envoy before version 1180, and subsequently Istio before version 193, contains a remotely exploitable vulnerability where an HTTP2 request with an empty metadata map can cause a crash ...

CWE-617 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 https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2021-29258

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CVE-2021-29258

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