SECURITY (Doc Number=3143): UPDATE AIX OpenSSH Vulnerability CVE-2010-5107

Content

 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1   IBM SECURITY ADVISORY  First Issued: Mon Apr 8 15:19:58 CDT 2013 | Updated: Fri Aug 2 16:51:48 CDT 2013 | Update: Vulnerable fileset levels corrected  | Update: VIOS correct versions  The most recent version of this document is available here:  http://aix.software.ibm.com/aix/efixes/security/openssh_advisory2.asc or ftp://aix.software.ibm.com/aix/efixes/security/openssh_advisory2.asc ===============================================================================                            VULNERABILITY SUMMARY  VULNERABILITY:   AIX OpenSSH Vulnerability  PLATFORMS:       AIX 5.3, 6.1 and 7.1 |                VIOS 2.X and 1.5.2  SOLUTION:        Apply the fix as described below.  THREAT:          See below  CVE Numbers:     CVE-2010-5107  Reboot required?    NO Workarounds?        NO Protected by FPM?   NO Protected by SED?   NO ===============================================================================                            DETAILED INFORMATION  I. DESCRIPTION (From cve.mitre.org)         CVE-2010-5107      The default configuration of OpenSSH through 6.1 enforces a fixed time      limit between establishing a TCP connection and completing a login, which      makes it easier for remote attackers to cause a denial of service       (connection-slot exhaustion) by periodically making many new TCP      connections.      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-5107  II. CVSS      CVSS Base Score: 5.0     CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/82781 for the     current score     CVSS Environmental Score*: Undefined     CVSS String: (AV:N/AC:L/Au:N/C:N/I:N/A:P)  III. PLATFORM VULNERABILITY ASSESSMENT      To determine if your system is vulnerable, execute the following     command:      lslpp -L openssh.base.server      The following fileset levels are vulnerable:  |   AIX:  7.1, 6.1, 5.3: all versions less than or equal to 6.0.0.6101  |   VIOS: 2.X and 1.5.2: all versions less than or equal to 6.0.0.6101   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 OpenSSH_6.0.0.6102.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 . OpenSSH_6.0.0.6102      To install the fix package:      installp -aXYd . OpenSSH_6.0.0.6102  V. WORKAROUNDS      There are 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:          security-alert@austin.ibm.com      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:              security-alert@austin.ibm.com          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/82781      CVE-2013-0169: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-5107      *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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (AIX)  iEYEARECAAYFAlH8Kq8ACgkQ4fmd+Ci/qhK/ygCgijMJlXZso0WEfA6tcuW6OvTm JfcAnRatGeh4ONycjKp+mX9tzAF7SwU8 =hsZF -----END PGP SIGNATURE-----