Cesar Cerrudo and Mark Litchfield have discovered multiple vulnerabilities in Oracle9i Database, which can be exploited by malicious database users to compromise the system and gain escalated privileges.

The first vulnerabilities are caused due to boundary errors in two functions used for interval conversion ("NUMTOYMINTERVAL" and "NUMTODSINTERVAL"). These can be exploited to cause buffer overflows by supplying an overly long "char_expr" string.

These two vulnerabilities have been reported in versions prior to 9.2.0.4 (Patchset 3).

The last two vulnerabilities are caused due to boundary errors in the "FROM_TZ" function and in the "TIME_ZONE" parameter.

Both vulnerabilities reportedly affect versions prior to 9.2.0.3.

Successful exploitation of the vulnerabilities may allow a malicious, unprivileged database user to execute arbitrary code with either SYSTEM or ORACLE privileges.

Solution
Update to version 9.2.0.4 and apply Patch 3, which reportedly is available via the Metalink site:
Further details available to Secunia VIM customers

Provided and/or discovered by
Cesar Cerrudo
Mark Litchfield, NGSSoftware.

Changelog
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Original Advisory
NGSSoftware: Oracle NUMTOYMINTERVAL Remote System Overflow
http://www.nextgenss.com/advisories/ora_numtoyminterval.txt

NGSSoftware: Oracle NUMTODSINTERVAL Remote System Overflow
http://www.nextgenss.com/advisories/ora_numtodsinterval.txt

NGSSoftware: Oracle TIME_ZONE Remote System Buffer Overrun
http://www.nextgenss.com/advisories/ora_time_zone.txt

NGSSoftware: Oracle FROM_TZ Remote System Buffer Overrun
http://www.nextgenss.com/advisories/ora_from_tz.txt

Other references
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Deep Links
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