Vulnerability CVE-2011-0026
Published: 2011-01-11   Modified: 2012-02-13

Description:
Integer signedness error in the SQLConnectW function in an ODBC API (odbc32.dll) in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, allows remote attackers to execute arbitrary code via a long string in the Data Source Name (DSN) and a crafted szDSN argument, which bypasses a signed comparison and leads to a buffer overflow, aka "DSN Overflow Vulnerability."

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Microsoft -> Data access components 
Microsoft -> Windows data access components 

 References:
http://support.avaya.com/css/P8/documents/100124846
http://www.securityfocus.com/bid/45695
http://www.securitytracker.com/id?1024947
http://www.us-cert.gov/cas/techalerts/TA11-011A.html
http://www.vupen.com/english/advisories/2011/0075
http://www.zerodayinitiative.com/advisories/ZDI-11-001/
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-002
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333
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