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Category:   Application (Web Server/CGI)  >   Oracle HTTP Server Vendors:   Oracle
(Oracle Plans Patch for Oracle HTTP Server) Re: OpenSSL Has Multiple Buffer Overflows That Allow Remote Users to Execute Arbitrary Code with Root Privileges
SecurityTracker Alert ID:  1005013
SecurityTracker URL:  http://securitytracker.com/id/1005013
CVE Reference:   CVE-2002-0655, CVE-2002-0656, CVE-2002-0657, CVE-2002-0659   (Links to External Site)
Date:  Aug 10 2002
Impact:   Denial of service via network, Execution of arbitrary code via network, Root access via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): version shipped with Oracle Database 9.2.0 (and prior versions)
Description:   Four buffer overflow conditions were reported in OpenSSL. All four may allow a remote user to execute arbitrary code.

The vendor has reported that A.L. Digital Ltd and The Bunker have uncovered multiple buffer overflows in OpenSSL, discovered during a security review.

A remote user could create a specially crafted, oversized client master key and use SSL2 to trigger an overflow on an SSL server. According to the report, this vulnerability was independently discovered by Neohapsis, which has confirmed that the overflow can be exploited to execute arbitrary code.

A remote user with an SSL server could create a specially crafted, oversized session ID and supply this ID to a target client using SSL3 to trigger an overflow.

A remote user could supply a specially crafted, oversized master key to an SSL3 server to trigger an overflow. It is reported that this flaw affects OpenSSL 0.9.7 prior to version 0.9.7-beta3 when Kerberos is enabled.

Several buffers used for ASCII representations of integers are reportedly too small on 64 bit platforms.

The report also states that other potential buffer overflows that are currently considered to be non-exploitable have been discovered.

The vendor notes that Adi Stav and James Yonan independently reported that the ASN1 parser can be confused by certain invalid encodings, potentially allowing a remote user to cause denial of service conditions. An OpenSSL-based application that use the ASN1 library to parse untrusted data (including all SSL or TLS applications using S/MIME [PKCS#7] or certificate generation routines) are affected.

Impact:   A remote user acting as an SSL client could execute arbitrary code on an SSL server. A remote user acting as an SSL server could cause arbitrary code to be executed on an SSL client that is connecting to the server. In each case, the code would run with privileges of the affected implementation.

A remote user may be able cause denial of service conditions.

Solution:   Oracle reports that the Oracle HTTP Server is affected by the OpenSSL bug. Oracle plans to issue Patch 2492925 on MetaLink. Depending on the operating system platform, patches will be released between August 8 and August 15, 2002. See the Vendor URL for more information.
Vendor URL:  otn.oracle.com/deploy/security/htdocs/opensslAlert.html (Links to External Site)
Cause:   Boundary error, Exception handling error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), UNIX (Tru64), Windows (NT)

Message History:   This archive entry is a follow-up to the message listed below.
Jul 30 2002 OpenSSL Has Multiple Buffer Overflows That Allow Remote Users to Execute Arbitrary Code with Root Privileges



 Source Message Contents

Subject:  Oracle Security Alert #37


http://otn.oracle.com/deploy/security/htdocs/opensslAlert.html

Oracle Security Alert #37
Dated: 1 August, 2002

Oracle issued a security alert (#37) regarding vulnerabilities in
OpenSSL.  The following Oracle products are affected:

    * Oracle HTTP Server (OHS) shipped with the database up to and
including version 9.2.0.
    * Oracle9iAS versions earlier than 9.0.2, including all versions
1.0.2.x.
    * CorporateTime Outlook Connector (CTOC), versions 3.1, 3.1.1,
3.1.2, and 3.3 on Windows 98, NT, 2K, XP.


Oracle reports that there are no workarounds against the potential
denial-of-service attack but that disabling SSL should prevent remote
execution of code.

Oracle has provided the following information regarding potential
solutions:


Users of Corporate Time Outlook Connector can disable TLS by adding the
following section to the CTOC.INI file:

[CTOC]
allow-tls=FALSE

NOTE:
Disabling SSL or TLS will result in data being transmitted in the clear
(i.e. unencrypted), including passwords whenb using Basic
Authentication.

Patch Information:

Availability of Patch 2492925 will be published on Monday, 5 August,
2002.
Once developed, this patch will be made available on MetaLink for the
following component versions, database versions, and operating systems:

    * iAS 1.0.2.0, 1.0.2.1, 1.0.2.1S, 1.0.2.2
    * RDBMS 8.1.7, 9.0.1, 9.2
    * Solaris, NT, AIX, Linux, Tru-64, HP

Upgrade Information:

New releases of the Corporate Time Outlook Connector will address this
vulnerability.

The following releases are scheduled to be released around 16 August,
2002:

   1. CorporateTime Outlook Connector 3.3.1
   2. Oracle Outlook Connector 3.4


 
 


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