Beckhoff TwinCAT up to 2.11.0.2004 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Beckhoff TwinCAT 2.7/2.8/2.9/2.10/2.11.0.2004. It has been classified as problematic. This affects an unknown part. The manipulation leads to memory corruption. This vulnerability is documented as CVE-2011-3486. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Beckhoff TwinCAT 2.7/2.8/2.9/2.10/2.11.0.2004. This issue affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.

The weakness was released 09/16/2011 (Website). It is possible to read the advisory at us-cert.gov. The identification of this vulnerability is CVE-2011-3486 since 09/16/2011. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as highly functional. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121584 (Beckhoff TwinCAT "TCATSysSrv.exe" Network Packet Denial of Service Vulnerability).

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

The vulnerability is also documented in the databases at X-Force (69765), Exploit-DB (17835), OSVDB (75495†) and Vulnerability Center (SBV-33300†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: beckhoff_twincat.rb
MetaSploit Name: Beckhoff TwinCAT SCADA PLC 2.11.0.2004 DoS
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/16/2011 🔍
09/16/2011 +0 days 🔍
09/16/2011 +0 days 🔍
09/16/2011 +0 days 🔍
09/26/2011 +10 days 🔍
03/23/2015 +1274 days 🔍
02/16/2025 +3618 days 🔍

Sourcesinfo

Advisory: us-cert.gov
Status: Not defined

CVE: CVE-2011-3486 (🔍)
GCVE (CVE): GCVE-0-2011-3486
GCVE (VulDB): GCVE-100-58511
X-Force: 69765
OSVDB: 75495
Vulnerability Center: 33300 - Beckhoff TwinCAT 2.11.0.2004 and earlier Remote DoS via Crafted Request to UDP Port 48899, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/23/2015 16:50
Updated: 02/16/2025 14:20
Changes: 03/23/2015 16:50 (50), 04/02/2017 12:05 (7), 01/06/2025 01:26 (18), 02/16/2025 14:20 (10)
Complete: 🔍
Cache ID: 216::103

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

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