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CVE-2021-29258

Good to know:

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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

Related Resources (9)

https://istio.io/latest/news/security/istio-security-2021-003/
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0
https://nvd.nist.gov/vuln/detail/CVE-2021-29258
https://blog.envoyproxy.io
https://github.com/envoyproxy/envoy/commit/72c16ed32b0ba3ac1b8e9d571d3a8cbe4a9e9f40
https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j
https://github.com/envoyproxy/envoy-setec/pull/230
https://www.mend.io/vulnerability-database/CVE-2021-29258

Severity Score

Weakness Type (CWE)

Reachable Assertion

CWE-617

Top Fix

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CVSS v3.1

Base Score:
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:
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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