Vulnerability Report

CVE-2019-18838

Title: Envoyproxy Envoy Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2019-18838.

CWE Category CWE-476
Published Date Dec 13, 2019
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
2.14%

Vulnerability Summary

CVE-2019-18838: An issue was discovered in Envoy 1.12.0. Upon receipt of a malformed HTTP request without a Host header, it sends an internally generated "Invalid request" response. This internally generated response is dispatched through the configured encoder filter chain before being sent to the client. An encoder filter that invokes route manager APIs that access a request's Host header causes a NULL pointer dereference, resulting in abnormal termination of the Envoy process.

Impacted Vendors

E
enphase 1
E
envoyproxy 1

Reference Links

https://blog.envoyproxy.io https://github.com/envoyproxy/envoy/commits/master https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc https://groups.google.com/forum/#%21forum/envoy-users https://blog.envoyproxy.io https://github.com/envoyproxy/envoy/commits/master https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc https://groups.google.com/forum/#%21forum/envoy-users
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-2019-18838 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.