CVE-2006-7067

Vulnerability

Oracle 10g R2 and possibly earlier versions accept the alter session set events command with invalid arguments, which may cause internal errors. The original report claimed an integer overflow, but this is uncertain. The command requires the ALTER SESSION system privilege; a user with only CREATE SESSION cannot execute it. Even with the privilege, a malformed event string results in an ORA-02194 syntax error. [1]

Exploitation

An attacker must have a database session with at least the ALTER SESSION privilege. The command is issued with a crafted event string, such as an extremely long numeric value. However, testing shows that the command fails with a syntax error before any overflow can occur. The original exploit claim was retracted after reproduction attempts failed. [1]

Impact

If the vulnerability were exploitable, it could lead to denial of service or potential code execution, given the complete CIA impact in the CVSS vector. However, no successful exploitation has been demonstrated; the command appears to be properly validated. The impact is therefore theoretical. [1]

Mitigation

No patch was released because the vulnerability is disputed and not reproducible. Oracle has not acknowledged it as a security issue. Users should ensure that the ALTER SESSION privilege is granted only to trusted users. No CVE listing in KEV. [1]