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TITLE:
avast! Internet Security "aswtdi.sys" IOCTL Handling Denial of
Service

SECUNIA ADVISORY ID:
SA42134

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42134/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42134

RELEASE DATE:
2010-11-05

DISCUSS ADVISORY:
http://secunia.com/advisories/42134/#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/42134/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42134

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 vulnerability has been reported in avast! Internet Security, which
can be exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error in the aswtdi.sys driver
when processing IOCTLs. This can be exploited to e.g. cause a crash
via a specially crafted 0x80000004 IOCTL.

The vulnerability is reported in avast! Internet Security version
5.0.677 and aswtdi.sys version 5.0.677.0. Other versions may also be
affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Nikita Tarakanov, CISS Research Team

ORIGINAL ADVISORY:
http://www.exploit-db.com/exploits/15420/

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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