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AUSCERT External Security Bulletin Redistribution
Race condition in the ssl3_read_bytes function in s3_pkt.c in OpenSSL.
11 June 2014
AusCERT Security Bulletin Summary
Product: IBM AIX
Operating System: AIX
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2010-5298
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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:
VULNERABILITY: Race condition in the ssl3_read_bytes function in s3_pkt.c in
PLATFORMS: AIX 5.3, 6.1 and 7.1
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2010-5298
Reboot required? NO
Protected by FPM? NO
Protected by SED? NO
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
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 184.108.40.2060 to 220.127.116.112 .
VIOS 2.X: all OpenSSL versions from 18.104.22.1680 to 22.214.171.1242 .
AIX OpenSSL v0.9.8.xxxx and 12.9.8.xxxx are not vulnerable to this
Note: To find out whether the affected filesets are installed on your
systems, refer to the lslpp command found in AIX user's guide.
A fix is available, and it can be downloaded from:
To extract the fixes from the tar file:
zcat openssl-126.96.36.1993.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
VI. CONTACT INFORMATION
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and click on the "My notifications" link.
To view previously issued advisories, please visit:
Comments regarding the content of this announcement can be
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Please contact your local IBM AIX support center for any
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Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html
On-line Calculator V2:
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/92632
*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
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