Beckhoff TwinCAT Runtime ADS Discovery Service UDP Packet denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Beckhoff TwinCAT Runtime. It has been rated as problematic. This impacts an unknown function of the component ADS Discovery Service. The manipulation as part of UDP Packet leads to denial of service. This vulnerability is documented as CVE-2019-5636. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Beckhoff TwinCAT Runtime (version unknown) and classified as problematic. This issue affects an unknown function of the component ADS Discovery Service. The manipulation as part of a UDP Packet leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

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.

The weakness was released 11/21/2019 (Website). It is possible to read the advisory at download.beckhoff.com. The identification of this vulnerability is CVE-2019-5636 since 01/07/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Rapid7, Inc.): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/07/2019 🔍
11/21/2019 +318 days 🔍
11/22/2019 +1 days 🔍
02/26/2024 +1557 days 🔍

Sourcesinfo

Advisory: download.beckhoff.com
Status: Not defined

CVE: CVE-2019-5636 (🔍)
GCVE (CVE): GCVE-0-2019-5636
GCVE (VulDB): GCVE-100-146111

Entryinfo

Created: 11/22/2019 08:37
Updated: 02/26/2024 12:09
Changes: 11/22/2019 08:37 (37), 11/22/2019 08:42 (11), 02/26/2024 12:09 (18)
Complete: 🔍
Cache ID: 216::103

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