PT-2009-11: SlySoft Multiple Products ElbyCDIO.sys Denial of Service

(PT-2009-11) Positive Technologies Security Advisory
SlySoft Multiple Products ElbyCDIO.sys Denial of Service

Affected Software

AnyDVD version and previous
Virtual CloneDrive and previous
CloneDVD and previous
CloneCD and previous

Product Link:

Severity Rating

Severity: Medium
Impact: Denial of Service
Attack Vector: Local

Base Score: 4.7
Temporal Score: 3.7
Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:C/E:P/RL:O/RC:C)

CVE: CVE-2009-0824

Software Description

SlySoft AnyDVD is capable of removing unwanted movie features, including subtitles and prohibition messages such as copyright and FBI warnings. It also allows you to launch an external application whenever you insert or remove a disc, or prevent 'PC-friendly' software from automatically launching when you insert a video DVD.

Vulnerability Description

Positive Technologies Research Team has discovered multiple memory corruption vulnerabilities in SlySoft products.

The IOCTL handler in ElbyCDIO.sys and earlier, shipped with AnyDVD, Virtual CloneDrive, CloneDVD and CloneCD, uses the METHOD_NEITHER communication method for IOCTLs and does not properly validate buffer data associated with the Irp object, which allows local users to crash the system.

Update AnyDVD to version
Update CloneDVD to version
Virtual CloneDrive:
Update Virtual CloneDrive to version

Disclosure Timeline

02.11.2009 - Vendor notified
02.11.2009 - Vendor replied
02.12.2009 - Sent detailed information
03.06.2009 - Vendor released fixed version of AnyDVD
03.10.2009 - Vendor released fixed version of Virtual CloneDrive
03.13.2009 - Vendor released fixed version of CloneDVD
03.13.2009 - Public disclosure


This vulnerability was discovered by Nikita Tarakanov, Positive Technologies Research Team.


Complete list of vulnerability reports published by Positive Technologies Research Team:

About Positive Technologies

Positive Technologies is among the key players in the IT security market in Russia.
The principal activities of the company include the development of integrated tools for information security monitoring (MaxPatrol); providing IT security consulting services and technical support; the development of the Securitylab leading Russian information security portal.

Among the clients of Positive Technologies there are more than 40 state enterprises, more than 50 banks and financial organizations, 20 telecommunication companies, more than 40 plant facilities, as well as IT, service and retail companies from Russia, CIS countries, Baltic States, China, Ecuador, Germany, Great Britain, Holland, Iran, Israel, Japan, Mexico, South African Republic, Thailand, Turkey and USA.

Positive Technologies is a team of highly skilled developers, advisers and experts with years of vast hands-on experience. The company specialists possess professional titles and certificates; they are the members of various international societies and are actively involved in the IT security field development.