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

Affected Software

SlySoft
AnyDVD version 6.5.2.2 and previous
Virtual CloneDrive 5.4.2.3 and previous
CloneDVD 2.9.2.0 and previous
CloneCD 5.3.1.3 and previous

Product Link:
http://www.slysoft.com

Severity Rating

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

CVSS v2
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 6.0.2.0 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.

Solution
AnyDVD:
Update AnyDVD to version 6.5.2.6.
CloneDVD:
Update CloneDVD to version 2.9.2.2.
Virtual CloneDrive:
Update Virtual CloneDrive to version 5.4.2.5.

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

Credits

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

References

http://en.securitylab.ru/lab/PT-2009-11
http://www.ptsecurity.ru/advisory.asp

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

http://en.securitylab.ru/lab/
http://www.ptsecurity.ru/advisory.asp

About Positive Technologies

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