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.
9.3	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in avast Antivirus Home up to 4.8.1368.0 (Anti-Malware Software). This affects an unknown functionality of the file Aavmker4.sys. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Aavmker4.sys in avast! 4.8 through 4.8.1368.0 and 5.0 before 5.0.418.0 running on Windows 2000 and XP does not properly validate input to IOCTL 0xb2d60030, which allows local users to cause a denial of service (system crash) or execute arbitrary code to gain privileges via IOCTL requests using crafted kernel addresses that trigger memory corruption.

The weakness was shared 02/23/2010 by Tobias Klein (Website). The advisory is shared at vupen.com. This vulnerability is uniquely identified as CVE-2010-0705 since 02/25/2010. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/02/2021).

The vulnerability scanner Nessus provides a plugin with the ID 44876 (avast! Professional Edition < 5.0.418 Local Privilege Escalation), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (44876).

Productinfo

Type

• Anti-Malware Software

Vendor

• avast

Name

• Antivirus Home

Version

• 4.8.1368

License

• free

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.3
VulDB Temp Score: 9.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 44876
Nessus Name: avast! Professional Edition < 5.0.418 Local Privilege Escalation
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 800479
OpenVAS Name: Aast! Antivirus aavmker4.sys Denial Of Service Vulnerability (Win)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/11/2010 🔍
02/22/2010 +10 days 🔍
02/22/2010 +0 days 🔍
02/23/2010 +1 days 🔍
02/23/2010 +0 days 🔍
02/23/2010 +0 days 🔍
02/23/2010 +0 days 🔍
02/25/2010 +1 days 🔍
02/25/2010 +0 days 🔍
03/01/2010 +4 days 🔍
03/18/2015 +1843 days 🔍
09/02/2021 +2360 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Researcher: Tobias Klein
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-0705 (🔍)
SecurityTracker: 1023644 - avast! 'aavmker4.sys' IOCTL Processing Bug Lets Local Users Deny Service
Vulnerability Center: 24938 - Avast! Antivirus \x27Aavmker4.sys\x27 Local DoS or Code Execution Vulnerability via IOCTL Request, High
SecurityFocus: 38363 - Avast! Antivirus 'aavmKer4.sys' Driver IOCTL Handling Local Privilege Escalation Vulnerability
OSVDB: 62510 - avast! Antivirus aavmker4.sys IOCTL Handling Memory Corruption

Entryinfo

Created: 03/18/2015 15:15
Updated: 09/02/2021 18:44
Changes: 03/18/2015 15:15 (62), 02/21/2017 17:20 (14), 09/02/2021 18:37 (3), 09/02/2021 18:44 (1)
Complete: 🔍

Discussion

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