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CVE-2021-29258

Date: May 20, 2021

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.

Language: C++

Severity Score

7.5

Related Resources (9)

Url: https://istio.io/latest/news/security/istio-security-2021-003/

Url: https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg

Url: https://github.com/envoyproxy/envoy/releases/tag/v1.14.0

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-29258

Url: https://blog.envoyproxy.io

Url: https://github.com/envoyproxy/envoy/commit/72c16ed32b0ba3ac1b8e9d571d3a8cbe4a9e9f40

Url: https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j

Url: https://github.com/envoyproxy/envoy-setec/pull/230

Url: https://www.mend.io/vulnerability-database/CVE-2021-29258

Severity Score

7.5

Weakness Type (CWE)

Reachable Assertion

CWE-617

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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