Title: Adaptive Server Anywhere Multiple Remote Buffer Overrun Vulnerabilities
Severity: HIGH
Description:
Adaptive Server Anywhere is a relational database the backend of SQL Anywhere Studio 8. It is a transaction-based SQL database.
It has been discovered that Adaptive Server Anywhere is prone to multiple remote buffer overrun vulnerabilities. The problem occurs due to insufficient bounds checking in a wide variety of procedures, stored procedures, and statements detailed below.
Affected CREATE statements: DATABASE, COMPRESSED DATABASE, EXPANDED DATABASE, ENCRYPTED FILE, DECRYPT FILE, DBSPACE, and WRITE FILE
Affected ALTER statements: DATABASE and WRITEFILE
Affected BACKUP statements: DATABASE DIRECTORY and DATABASE TO
Miscellaneous statements: INSTALL JAVA, DROP DATABSE, and RESTORE DATABASE
Each of the above statements is by default given the 'DBA' permissions, possibly them inaccessible to some attackers.
The START DATABSE statement is also prone to a buffer overrun, however this statement is accessible by all users on personal databases, and 'DBA' only on network databases.
The following is a list of affected stored procedures and procedures with 'DBA' permissions: XP_STARTSMTP, XP_SENDMAIL, and SA_EXEC_SCRIPT
Finally, below is a list of affected stored procedures and procedures with 'NONE' permissions: SP_REMOTE_COLUMNS, SP_REMOTE_EXPORTED_KEYS, SP_REMOTE_IMPORTED_KEYS, SP_REMOTE_PRIMARY_KEYS, SP_REMOTE_TABLES, and SA_FORWARD_TO
As a result of these buffer overrun vulnerabilities, a malicious remote user could access the database, possibly requiring 'DBA' access permissions, and supply excessive, but specially formatted data to affected statement or procedure. This could ultimately allow for the execution of arbitrary code within the context of the user whom invoked the database.
Affected Products:
- Sybase Adaptive Server Anywhere 9.0.0
References:
- Sybase: Adaptive Server Anywhere Homepage
- Sybase: Sybase Homepage
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