Siemens SIMATIC HMI panel input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

A vulnerability classified as critical was found in Siemens SIMATIC HMI panel (SCADA Software) (affected version unknown). Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to cause a denial of service (application crash) by sending crafted data over TCP.

The weakness was presented 02/03/2012 by Luigi Auriemma with ICS-CERT (Website). It is possible to read the advisory at us-cert.gov. This vulnerability is known as CVE-2011-4877 since 12/21/2011. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Luigi Auriemma and been published even before and not after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 67 days. During that time the estimated underground price was around $5k-$25k.

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 (72990) and Exploit-DB (18166). See 60105, 60104, 60102 and 60101 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.5
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Luigi Auriemma
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/28/2011 🔍
11/28/2011 +0 days 🔍
12/21/2011 +23 days 🔍
02/02/2012 +43 days 🔍
02/03/2012 +1 days 🔍
02/03/2012 +0 days 🔍
02/03/2012 +0 days 🔍
04/03/2012 +60 days 🔍
03/23/2015 +1084 days 🔍
11/29/2021 +2443 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-345442
Researcher: Luigi Auriemma
Organization: ICS-CERT
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-4877 (🔍)
X-Force: 72990
Vulnerability Center: 34794 - Multiple Siemens WinCC Products HmiLoad Remote DoS Vulnerability via Sending Crafted Data Over TCP, Medium
SecurityFocus: 51836 - Siemens SIMATIC WinCC HMI Web Server Multiple Input Validation Vulnerabilities
OSVDB: 77380

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

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/29/2021 13:27
Changes: 03/23/2015 16:50 (50), 04/10/2017 18:02 (19), 11/29/2021 13:27 (3)
Complete: 🔍

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