Vulnerability Report

CVE-2021-29258

Title: Envoy HTTP2 Metadata Null Pointer Dereference

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2021-29258.

CWE Category CWE-617
Published Date May 20, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
1.74%

Vulnerability Summary

CVE-2021-29258: 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.

Impacted Vendors

E
envoyproxy 1
E
enphase 1

Reference Links

https://blog.envoyproxy.io https://github.com/envoyproxy/envoy-setec/pull/230 https://github.com/envoyproxy/envoy/releases/tag/v1.14.0 https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j https://blog.envoyproxy.io https://github.com/envoyproxy/envoy-setec/pull/230 https://github.com/envoyproxy/envoy/releases/tag/v1.14.0 https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-29258 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.