CVE-2019-18838
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
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.
Overview
- CVE ID
- CVE-2019-18838
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-13T13:15:11
- Last Modified Date
- 2019-12-18T20:57:35
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.12.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/envoyproxy/envoy/commits/master | Patch |
| https://blog.envoyproxy.io | Product |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc | Exploit Third Party Advisory |
| https://groups.google.com/forum/#!forum/envoy-users | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-18838 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18838 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:56:20 | Added to TrackCVE | |||
| 2022-12-04 07:51:17 | 2019-12-13T13:15Z | 2019-12-13T13:15:11 | CVE Published Date | updated |
| 2022-12-04 07:51:17 | 2019-12-18T20:57:35 | CVE Modified Date | updated | |
| 2022-12-04 07:51:17 | Analyzed | Vulnerability Status | updated |