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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.0282 Malformed client flows abend MQTT channel 4 February 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere MQ Publisher: IBM Operating System: Linux variants Windows Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-4943 CVE-2015-4942 CVE-2015-4941 CVE-2015-2012 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=swg21972012 http://www.ibm.com/support/docview.wss?uid=swg21968399 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Malformed client flows abend MQTT channel (CVE-2015-4943, CVE-2015-4941, CVE-2015-4942) Security Bulletin Document information More support for: WebSphere MQ WMQ Telemetry Software version: 7.1, 7.5, 8.0 Operating system(s): Linux, Windows Software edition: Advanced Reference #: 1972012 Modified date: 2016-02-02 Summary A number of malformed MQTT client flows could be issued by a malicious user to cause the MQXR service to abend and require manual restart. Vulnerability Details CVEID: CVE-2015-4943 DESCRIPTION: IBM WebSphere MQ could allow a remote attacker to crash the MQXR service using a sequence of connect and disconnects which will have to be restarted. CVSS Base Score: 5 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/104516 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) CVEID: CVE-2015-4941 DESCRIPTION: IBM WebSphere MQ could allow a remote attacker to crash the MQXR service due to incorrect handling of abbreviated TLS handshake. CVSS Base Score: 5 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/104514 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) CVEID: CVE-2015-4942 DESCRIPTION: IBM WebSphere MQ could allow a remote attacker to crash the MQXR service using a sequence of connect and disconnects which will have to be restarted. CVSS Base Score: 5 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/104515 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) Affected Products and Versions IBM WebSphere MQ 8.0 - - IBM WebSphere MQ 8.0.0.3 and earlier maintenance levels IBM WebSphere MQ 7.5 - - IBM WebSphere MQ 7.5.0.5 and earlier maintenance levels IBM WebSphere MQ 7.1 - - IBM WebSphere MQ 7.1.0.6 and earlier maintenance levels Remediation/Fixes WebSphere MQ 8.0 - - Apply fixpack 8.0.0.4 WebSphere MQ 7.5 - - Apply interim ifix IT09866 WebSphere MQ 7.1 - - Apply fixpack 7.1.0.7 Workarounds and Mitigations None Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS v2 Guide On-line Calculator v2 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Acknowledgement Reported to IBM by Codenomicon at http://www.codenomicon.com/ Change History 01 February 2016: Original version published *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 Security Bulletin. Disclaimer 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. - --------------------------------------------------------------------------- Security Bulletin: IBM WebSphere MQ MQXR insecure passwords (CVE-2015-2012) Security Bulletin Document information More support for: WebSphere MQ WMQ Telemetry Software version: 7.1, 7.5, 8.0 Operating system(s): Linux, Windows Software edition: All Editions Reference #: 1968399 Modified date: 2016-02-02 Summary The Telemetry (MQXR) service can be configured to use SSL/TLS connections - the passphrase used to access the keystore is written to the file system in clear text in a properties file that is world readable. Vulnerability Details CVEID: CVE-2015-2012 DESCRIPTION: IBM WebSphere MQ stores the MQXR keystore password in clear text in a world readable file. CVSS Base Score: 2.1 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/103923 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) Affected Products and Versions IBM WebSphere MQ 8.0 8.0.0.3 and earlier maintenance levels 7.5.0.5 and earlier maintenance levels 7.1.0.6 and earlier maintenance levels Remediation/Fixes IBM WebSphere MQ 8.0 Install fixpack 8.0.0.4 IBM WebSphere MQ 7.5 Apply Interim fix IT09866 IBM WebSphere MQ 7.1 Install fixpack 7.1.0.7 Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 01 February 2016: Original Copy Published *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 Security Bulletin. Disclaimer 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVrKmYX6ZAP0PgtI9AQLwzxAAphAet4V3JE4S9EOvTW2mJnhK1PrnHoXs SK2o/BSkPQ4CIX/wgyz5kJfSRQqxpxgun0f91KPJjFKj4fV4naIhXnhPox/5jrwW 909ovvMlbuBQN1yAhtGOZdi+mypfBLE7V6oN8YfTOhTIBpx11qOu7vgS27we26Gt a6OI1VezWW6kGAhCyjgK1ckZ4unh/DalAlyDQ1MR9VczciMq6iELZfr/xmD4emQv h2rjOMUdsHdNsdXejgOLY574ywN59MWYRaLLW7obnV3b/Jb/OYTcUvgpOTZUVvAb hNjhjPt+fm6MbSQuYUjXPgdCXS+YQBJqXWFOB5bj3kfCbou4UIolzbpaKpW2fEmb B82V3kiAzPB2WrWrSk4UMiovZNgmV6BBkMIbP5MI2SOcGm1ASelSPsx+YdP97BGE l4y6Nnx+tVEtE06J5rsz9lNAW/ZVbPoQPynsNs+sWNfwdJg8TxpZTHpJv/CjpcmM QhJD+QxOBA0raYw9NM3PDy4XpALT3nAB2AjyLwm+hQVvOu73quCopWWmRsYh2R/f 8p0at9jtF2GaRQXLEVCNDzpRCNTklc1gC/PccK/5hLU2h/cWMTQV39h98dcMsFY5 cYDGaIDqsbFKjQDPdAbcPqKNnRc32c1mJHzBxwjTXn2I2hm8Edm123GXYNZNWJJ+ ClccUKxTgiQ= =hNpi -----END PGP SIGNATURE-----