Forwarded from: Jay D. Dyson <jdysonat_private> -----BEGIN PGP SIGNED MESSAGE----- Courtesy of Bugtraq. Well, this sure smacks down Ellison's claim that his software is unhackable. Bleeding moron. I wonder if he thinks his idea for a National ID card is "secure," too? I'll point and laugh later. With any luck, this is just the tip of the iceberg. - ---------- Forwarded message ---------- Date: Fri, 21 Dec 2001 03:05:57 -0000 From: David Litchfield <davidat_private> To: bugtraqat_private Subject: Buffer Overflow in Oracle 9iAS (#NISR20122001) NGSSoftware Insight Security Research Advisory Name: Oracle PL/SQL Apache Module Systems Affected: Oracle 9iAS Platforms: Sun SPARC Solaris 2.6 MS Windows NT/2000 Server HP-UX 11.0/32-bit Severity: High Risk Vendor URL: http://www.oracle.com/ Author: David Litchfield (davidat_private) Date: 20th December 2001 Advisory number: #NISR20122001 Description *********** The web service with Oracle 9iAS is powered by Apache and provides many application environmentswith which to offer services from the site. These include SOAP, PL/SQL, XSQL and JSP. Two security issues exists in the PL/SQL Apache module - one a buffer overrun vulnerability and the second a directory traversal issue. The directory traversal issue affects only Windows NT/2000. Details ******* The PL/SQL module exists to allow remote users to call procedures exported by a PL/SQL package stored in the database server. As part of the functionality offered by the PL/SQL module it is possible to remotely administer the Database Access Descriptors and from here access help pages. Normally, access to the /admin_/ pages is restricted - a UserID and password are required but not for the help pages however. A buffer overrun vulnerability exists in the module whereby a request for an overly long help page will cause the overflow overwriting the saved return address on the stack. By overwriting this saved return address with an address that contains a "call esp" or "jmp esp" instruction a potential attack would land into the user-supplied buffer and any computer code in the buffer would be executed. On Windows 2000/NT the apache process is running is the security context of the SYSTEM account by default so any code executed would do so without inhibition and an attacker could gain complete control over this system remotely. The second issue relates to a double URL decoding problem that allows attackers to make a special request for a "help" file and break outside of the web root. Fix Information *************** NGSSoftware alerted Oracle to these problems on the 18th of November who responded quickly with a patch. This patch has been available from the Metalink site (http://metalink.oracle.com) for over a week and both Oracle and NGSSoftware urge Oracle 9iAS customers to download and install this patch if they have not already done so. Oracle's advisory on this issue can be found at http://otn.oracle.com/deploy/security/pdf/modplsql.pdf. Further to applying the patch it is suggested that the default "/admin_" path be changed to something else. To do this edit the wdbsvr.app file located in the $ORACLE_HOME$\Apache\modplsql\cfg directory. Edit the "adminPath" entry. A check for these issues has been added to Typhon II, of which more information is available from the NGSSoftware website, http://www.ngssoftware.com. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 Comment: See http://www.treachery.net/~jdyson/ for current keys. iQCVAwUBPCNmurlDRyqRQ2a9AQGIGAP/VFq5bCjmNjB+li+anqXN1LcFePRTxSjO 1zZpee5Q31waQNwGNQECD7IaXFXXjifus8HVqSMIepWsxJ8bZq7EFW+MBRb/TwQ0 h2TezV8OeTZSs4ZVIdRg2hzroCpLj828cjlmqbMTx44xnYoE49fqcRXwdKxZKnIP r0L7qu4ZWWM= =JttD -----END PGP SIGNATURE----- - ISN is currently hosted by Attrition.org To unsubscribe email majordomoat_private with 'unsubscribe isn' in the BODY of the mail.
This archive was generated by hypermail 2b30 : Mon Dec 24 2001 - 06:07:35 PST