CVE-2006-0547
HighSummary
Oracle Database 8i, 9i, and 10g allow remote authenticated users to execute arbitrary SQL statements as the SYS user and bypass audit logging by modifying the AUTH_ALTER_SESSION attribute during TNS authentication.
Risk Assessment
The organization faces complete database compromise – attackers can create privileged accounts, exfiltrate data, or alter configuration without leaving audit traces.
Recommendation
Apply the Oracle patch immediately if available, or upgrade to a fixed version. Restrict database access to trusted users and monitor TNS protocol anomalies in the meantime.
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Original NVD description (English source)
Oracle Database 8i, 9i, and 10g allow remote authenticated users to execute arbitrary SQL statements in the context of the SYS user and bypass audit logging, including statements to create new privileged database accounts, via a modified AUTH_ALTER_SESSION attribute in the authentication phase of the Transparent Network Substrate (TNS) protocol. NOTE: due to the lack of relevant details from the Oracle advisory, a separate CVE is being created since it cannot be conclusively proven that this issue has been addressed by Oracle. It is possible that this is the same issue as Oracle Vuln# DB18 from the January 2006 CPU, in which case this would be subsumed by CVE-2006-0265.

