CVE-2019-5636
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
When a Beckhoff TwinCAT Runtime receives a malformed UDP packet, the ADS Discovery Service shuts down. Note that the TwinCAT devices are still performing as normal. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).
Overview
- CVE ID
- CVE-2019-5636
- Assigner
- cve@rapid7.con
- Vulnerability Status
- Modified
- Published Version
- 2019-11-21T20:15:15
- Last Modified Date
- 2020-02-04T23:15:10
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:beckhoff:twincat:2.0:build2304:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:beckhoff:twincat:3.1:build4024.0:*:*:*:*:*:* | 1 | OR |
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://download.beckhoff.com/download/Document/product-security/Advisories/advisory-2019-004.pdf | Vendor Advisory |
| https://blog.rapid7.com/2019/10/08/r7-2019-32-denial-of-service-vulnerabilities-in-beckhoff-twincat-plc-environment-fixed/ | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-5636 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5636 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:51:05 | Added to TrackCVE | |||
| 2022-12-04 06:44:35 | cve@rapid7.com | cve@rapid7.con | CVE Assigner | updated |
| 2022-12-04 06:44:35 | 2019-11-21T20:15Z | 2019-11-21T20:15:15 | CVE Published Date | updated |
| 2022-12-04 06:44:35 | 2020-02-04T23:15:10 | CVE Modified Date | updated | |
| 2022-12-04 06:44:35 | Modified | Vulnerability Status | updated |