AVG Secure Search toolbar up to 18.1.6 ActiveX Control ScriptHelper.exe access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

A vulnerability was found in AVG Secure Search toolbar up to 18.1.6. It has been rated as very critical. This issue affects some unknown processing of the file ScriptHelper.exe of the component ActiveX Control. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

ScriptHelperApi in the AVG ScriptHelper ActiveX control in ScriptHelper.exe in AVG Secure Search toolbar before 18.1.7.598 and AVG Safeguard before 18.1.7.644 does not implement domain-based access control for method calls, which allows remote attackers to trigger the downloading and execution of arbitrary programs via a crafted web site.

The weakness was disclosed 07/08/2014 by Will Dormann with CERT/CC as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. The identification of this vulnerability is CVE-2014-2956 since 04/21/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/21/2024). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 76589 (AVG 'ScriptHelperApi' ActiveX Remote Code Execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Upgrading to version 18.1.7 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (94283), Tenable (76589), SecurityFocus (BID 68421†) and Vulnerability Center (SBV-45647†).

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: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 76589
Nessus Name: AVG 'ScriptHelperApi' ActiveX Remote Code Execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Secure Search toolbar 18.1.7

Timelineinfo

04/21/2014 🔍
07/07/2014 +77 days 🔍
07/07/2014 +0 days 🔍
07/08/2014 +1 days 🔍
07/08/2014 +0 days 🔍
07/18/2014 +10 days 🔍
07/30/2014 +12 days 🔍
03/26/2015 +239 days 🔍
08/21/2024 +3436 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: Will Dormann
Organization: CERT/CC
Status: Confirmed

CVE: CVE-2014-2956 (🔍)
CERT: 🔍
X-Force: 94283
SecurityFocus: 68421 - AVG Secure Search 'ScriptHelperApi' ActiveX Control Remote Code Execution Vulnerability
Vulnerability Center: 45647 - AVG Secure Search Toolbar Before 18.1.7.598 and AVG Safeguard Before 18.1.7.644 Remote Arbitrary Code Execution Vulnerability, Medium

Entryinfo

Created: 03/26/2015 12:07 PM
Updated: 08/21/2024 09:32 AM
Changes: 03/26/2015 12:07 PM (63), 06/03/2017 07:38 AM (5), 03/24/2022 03:24 PM (3), 08/21/2024 09:32 AM (15)
Complete: 🔍
Cache ID: 18:F54:40

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