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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0953 Race condition in the ssl3_read_bytes function in s3_pkt.c in OpenSSL. 11 June 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM AIX Publisher: IBM Operating System: AIX Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2010-5298 Reference: ESB-2014.0946 ESB-2014.0887 ESB-2014.0624.2 ESB-2014.0543 Original Bulletin: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory8.asc - --------------------------BEGIN INCLUDED TEXT-------------------- 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: 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/92632 CVE-2010-5298 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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