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TITLE:
WinCDEmu Drive Unmount Denial of Service Security Issue

SECUNIA ADVISORY ID:
SA47760

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47760/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47760

RELEASE DATE:
2012-01-25

DISCUSS ADVISORY:
http://secunia.com/advisories/47760/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/47760/

ONLY AVAILABLE IN CUSTOMER AREA:
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 * Report Reliability
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47760

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been discovered in WinCDEmu, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The security issue is caused due to the virtual bus driver
(BazisVirtualCDBus.sys) incorrectly unmounting drives and can be
exploited to cause a system crash via the "/unmountall" command
supplied to the "batchmnt.exe" utility.

The security issue is confirmed in version 3.6. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Reported by Floris (flockster) via a bug report.

ORIGINAL ADVISORY:
http://forum.sysprogs.org/viewtopic.php?f=3&t=1418

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Secunia NEVER sends attached files with advisories.
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