WellinTech KingView 6.52/6.53 ActiveX Control KVWebSvr.dll second memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4$0-$5k0.00

Summaryinfo

A vulnerability was found in WellinTech KingView 6.52/6.53. It has been classified as critical. Affected by this issue is some unknown functionality in the library KVWebSvr.dll of the component ActiveX Control. The manipulation of the argument second leads to memory corruption. This vulnerability is documented as CVE-2011-3142. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in WellinTech KingView 6.52/6.53. It has been rated as very critical. This issue affects an unknown code block in the library KVWebSvr.dll of the component ActiveX Control. The manipulation of the argument second 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 confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in an ActiveX control in KVWebSvr.dll in WellinTech KingView 6.52 and 6.53 allows remote attackers to execute arbitrary code via a long second argument to the ValidateUser method.

The weakness was released 08/16/2011 by Carlos Mario Penagos Hollmann (Website). The advisory is shared at us-cert.gov. The identification of this vulnerability is CVE-2011-3142 since 08/16/2011. 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 as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/11/2025).

A public exploit has been developed by Carlos Mario Penagos Hollmann and been published before and not just after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 162 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119534 (WellinTech KingView SCADA KVWebSvr Buffer Overflow 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 (65940), Exploit-DB (16936), SecurityFocus (BID 46757†), OSVDB (72889†) and Vulnerability Center (SBV-30286†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.4

VulDB Base Score: 10.0
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Carlos Mario Penagos Hollmann
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 902724
OpenVAS Name: WellinTech KingView KVWebSvr.dll ActiveX Control Heap Buffer Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/07/2011 🔍
03/07/2011 +0 days 🔍
03/07/2011 +0 days 🔍
03/07/2011 +0 days 🔍
03/13/2011 +6 days 🔍
08/16/2011 +156 days 🔍
08/16/2011 +0 days 🔍
08/16/2011 +0 days 🔍
03/23/2015 +1315 days 🔍
01/11/2025 +3582 days 🔍

Sourcesinfo

Advisory: us-cert.gov
Researcher: Carlos Mario Penagos Hollmann
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-3142 (🔍)
GCVE (CVE): GCVE-0-2011-3142
GCVE (VulDB): GCVE-100-58301
X-Force: 65940
SecurityFocus: 46757 - WellinTech KingView 'KVWebSvr.dll' ActiveX Control Heap Buffer Overflow Vulnerability
OSVDB: 72889
Vulnerability Center: 30286 - WellinTech KingView 6.53 Remote Arbitrary Code Execution Vulnerability, Medium

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

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/11/2025 15:26
Changes: 03/23/2015 16:50 (59), 03/18/2017 08:38 (20), 01/11/2025 15:26 (17)
Complete: 🔍
Cache ID: 216:BBA:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!