Oracle9i Application Server PL/SQL module long help page buffer overflow
| oracle-appserver-modplsql-bo (7727) |  High Risk |
Description:
Oracle9i Application Server is vulnerable to a denial of service attack caused by a buffer overflow in the PL/SQL Apache Web module. By sending a URL request for an overly long help page, a remote attacker can overflow a buffer in ModPL/SQL and cause the system to crash or execute arbitrary code on the system with system level privileges.
Consequences:
Gain Access
Remedy:
Apply patch number 2128936, available from the Oracle MetaLink Web site. See References.
—AND—
In addition to applying the patch, change the default "/admin_" path to something other than the default. To change the default "/admin_" path, edit the "adminPath" entry in the wdbsvr.app file located in the $ORACLE_HOME$\Apache\modplsql\cfg directory.
References:
- CERT Advisory CA-2002-08: Multiple vulnerabilities in Oracle Servers.
- NGSSoftware Insight Security Research Advisory #NISR20122001: Oracle PL/SQL Apache Module.
- Oracle MetaLink Web site: Oracle Corporation - OracleMetaLink.
- Oracle Security Alert #25: Vulnerabilities in MODPLSQL.
- BID-3726: Oracle 9I Application Server PL/SQL Apache Module Buffer Overflow Vulnerability
- CVE-2001-1216: Buffer overflow in PL/SQL Apache module in Oracle 9i Application Server allows remote attackers to execute arbitrary code via a long request for a help page.
- OSVDB ID: 9459: Oracle PL/SQL (mod_plsql) Apache Module Help Page Request Remote Overflow
- US-CERT VU#500203: Oracle9i Application Server Apache PL/SQL module vulnerable to buffer overflow via help page request
Platforms Affected:
- Oracle Application Server 9i
Reported:
Dec 21, 2001
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