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IBM SECURITY ADVISORY

First Issued: Fri Jun 6 05:44:06 CDT 2014

The most recent version of this document is available here:

http://aix.software.ibm.com/aix/efixes/security/openssl_advisory8.asc
https://aix.software.ibm.com/aix/efixes/security/openssl_advisory8.asc
ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory8.asc

                       VULNERABILITY SUMMARY

VULNERABILITY: Race condition in the ssl3_read_bytes function in s3_pkt.c in
OpenSSL.

PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.X

SOLUTION: Apply the fix as described below.

THREAT: See below

CVE Numbers: CVE-2010-5298

Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO

                       DETAILED INFORMATION

I. DESCRIPTION

CVE-2010-5298 
Race condition in the ssl3_read_bytes function in s3_pkt.c in OpenSSL 
through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled,allows remote
attackers to inject data across sessions or cause a denial of service
(use-after-free and parsing error) via an SSL connection in a multithreaded
environment.

II. CVSS

CVE-2010-5298
CVSS Base Score:4
CVSS Temporal Score:see http://xforce.iss.net/xforce/xfdb/92632
CVSS Environmental Score*:Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)

III. PLATFORM VULNERABILITY ASSESSMENT

The following fileset levels are vulnerable:

AIX 7.1, 6.1, 5.3: all OpenSSL versions from 1.0.1.500 to 1.0.1.502 .
VIOS 2.X: all OpenSSL versions from 1.0.1.500 to 1.0.1.502 .


AIX OpenSSL v0.9.8.xxxx and 12.9.8.xxxx are not vulnerable to this 
security vulnerability.

Note: To find out whether the affected filesets are installed on your
systems, refer to the lslpp command found in AIX user's guide.

IV. FIXES

A fix is available, and it can be downloaded from:

https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp

To extract the fixes from the tar file:

zcat openssl-1.0.1.503.tar.Z | tar xvf -

IMPORTANT: If possible, it is recommended that a mksysb backup
of the system be created.  Verify it is both bootable and
readable before proceeding.

To preview the fix installation:

installp -apYd . openssl

To install the fix package:

installp -aXYd . openssl

V. WORKAROUNDS

No workarounds.

VI. CONTACT INFORMATION

If you would like to receive AIX Security Advisories via email,
please visit:

    http://www.ibm.com/systems/support

and click on the "My notifications" link.

To view previously issued advisories, please visit:

    http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq

Comments regarding the content of this announcement can be
directed to:

    [email protected]

To obtain the PGP public key that can be used to communicate
securely with the AIX Security Team you can either:

    A. Send an email with "get key" in the subject line to:

        [email protected]

    B. Download the key from our web page:

http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgpkey.txt

    C. Download the key from a PGP Public Key Server. The key ID is:

        0x28BFAA12

Please contact your local IBM AIX support center for any
assistance.

eServer is a trademark of International Business Machines
Corporation.  IBM, AIX and pSeries are registered trademarks of
International Business Machines Corporation.  All other trademarks
are property of their respective holders.

VII. REFERENCES:

Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html
On-line Calculator V2: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/92632
CVE-2010-5298 :  https://vulners.com/cve/CVE-2010-5298

*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the
impact of this vulnerability in their environments by accessing the links
in the Reference section of this Flash.

Note: According to the Forum of Incident Response and Security Teams
(FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry
open standard designed to convey vulnerability severity and help to
determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES
"AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE
RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY
VULNERABILITY.

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