Published: 12/01/2011 Updated: 07/12/2023

CVSS v2 Base Score: 9.3 | Impact Score: 10 | Exploitability Score: 8.6

VMScore: 828

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

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 malicious users 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."

Vulnerable Product	Search on Vulmon	Subscribe to Product
microsoft data_access_components 2.8
microsoft windows_data_access_components 6.0

CWE-189 http://www.securityfocus.com/bid/45695 http://secunia.com/advisories/42804 http://www.vupen.com/english/advisories/2011/0075 http://support.avaya.com/css/P8/documents/100124846 http://www.us-cert.gov/cas/techalerts/TA11-011A.html http://www.securitytracker.com/id?1024947 http://osvdb.org/70443 http://www.zerodayinitiative.com/advisories/ZDI-11-001/https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-002 https://nvd.nist.gov

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