Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2885 Security Bulletin: Vulnerabilities in OpenSSL affects IBM Rational ClearCase (CVE-2016-2177, CVE-2016-2178, CVE-2016-2183, CVE-2016-6302, CVE-2016-6303, CVE-2016-6304, CVE-2016-6306) 8 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Rational ClearCase Publisher: IBM Operating System: AIX HP-UX Linux variants Solaris Windows Impact/Access: Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-6306 CVE-2016-6304 CVE-2016-6303 CVE-2016-6302 CVE-2016-2183 CVE-2016-2178 CVE-2016-2177 Reference: ASB-2016.0098 ASB-2016.0095 ESB-2016.2881 ESB-2016.2782 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=swg21993514 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerabilities in OpenSSL affects IBM Rational ClearCase (CVE-2016-2177, CVE-2016-2178, CVE-2016-2183, CVE-2016-6302, CVE-2016-6303, CVE-2016-6304, CVE-2016-6306) Security Bulletin Document information More support for: Rational ClearCase Perl: ratlperl Software version: 7.1, 7.1.0.1, 7.1.0.2, 7.1.1, 7.1.1.1, 7.1.1.2, 7.1.1.3, 7.1.1.4, 7.1.1.5, 7.1.1.6, 7.1.1.7, 7.1.1.8, 7.1.1.9, 7.1.2, 7.1.2.1, 7.1.2.2, 7.1.2.3, 7.1.2.4, 7.1.2.5, 7.1.2.6, 7.1.2.7, 7.1.2.8, 7.1.2.9, 7.1.2.10, 7.1.2.11, 7.1.2.12, 7.1.2.13, 7.1.2.14, 7.1.2.15, 7.1.2.16, 7.1.2.17, 7.1.2.18, 7.1.2.19, 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 8.0.0.8, 8.0.0.9, 8.0.0.10, 8.0.0.11, 8.0.0.12, 8.0.0.13, 8.0.0.14, 8.0.0.15, 8.0.0.16, 8.0.0.17, 8.0.0.18, 8.0.0.19, 8.0.1, 8.0.1.1, 8.0.1.2, 8.0.1.3, 8.0.1.4, 8.0.1.5, 8.0.1.6, 8.0.1.7, 8.0.1.8, 8.0.1.9, 8.0.1.10, 8.0.1.11, 8.0.1.12, 9.0, 9.0.0.1, 9.0.0.2 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Reference #: 1993514 Modified date: 07 December 2016 Summary OpenSSL vulnerabilities were disclosed on September 22 and 26, 2016 by the OpenSSL Project. OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVEs. Vulnerability Details CVEID: CVE-2016-2177 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the incorrect use of pointer arithmetic for heap-buffer boundary checks. By leveraging unexpected malloc behavior, a remote attacker could exploit this vulnerability to trigger an integer overflow and cause the application to crash. CVSS Base Score: 5.9 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113890 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) CVEID: CVE-2016-2178 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the DSA implementation that allows the following of a non-constant time codepath for certain operations. An attacker could exploit this vulnerability using a cache-timing attack to recover the private DSA key. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113889 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) CVEID: CVE-2016-2183 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error in the in the Triple-DES on 64-bit block cipher, used as a part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic between the SSL/TLS server and the client, a remote attacker able to conduct a man-in-the-middle attack could exploit this vulnerability to recover the plaintext data and obtain sensitive information. This vulnerability is known as the SWEET32 Birthday attack. CVSS Base Score: 3.7 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116337 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N) CVEID: CVE-2016-6302 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the failure to consider the HMAC size during validation of the ticket length by the tls_decrypt_ticket function A remote attacker could exploit this vulnerability using a ticket that is too short to cause a denial of service. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117024 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) CVEID: CVE-2016-6303 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an integer overflow in the MDC2_Update function. By using unknown attack vectors, a remote attacker could exploit this vulnerability to trigger an out-of-bounds write and cause the application to crash. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117023 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) CVEID: CVE-2016-6304 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by multiple memory leaks in t1_lib.c during session renegotiation. By sending an overly large OCSP Status Request extension, a remote attacker could exploit this vulnerability to consume all available memory resources. CVSS Base Score: 7.5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117110 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVEID: CVE-2016-6306 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by missing message length checks when parsing certificates. A remote authenticated attacker could exploit this vulnerability to trigger an out-of-bounds read and cause a denial of service. CVSS Base Score: 4.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117112 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) Affected Products and Versions IBM Rational ClearCase versions: Version Status 9.0 through 9.0.0.2 Affected 8.0.1 through 8.0.1.12 Affected 8.0 through 8.0.0.19 Affected 7.1.0.x, 7.1.1.x, 7.1.2.x (all versions) Affected Not all deployments of Rational ClearCase use OpenSSL in a way that is affected by these vulnerabilities. You are vulnerable if your use of Rational ClearCase includes any of these configurations: 1. You use the base ClearCase/ClearQuest integration client on any platform, configured to use SSL to communicate with a ClearQuest server. 2. You use the UCM/ClearQuest integration on UNIX/Linux clients, configured to use SSL to communicate with a ClearQuest server. Note: Windows clients using the UCM/ClearQuest integration are not vulnerable. 3. On UNIX/Linux clients, you use the Change Management Integration (CMI) for base ClearCase with ClearQuest or Rational Team Concert (RTC), or for UCM with ClearQuest or RTC, or for Jira, when configured to use SSL to communicate with the server. Note: Windows clients using the CMI integration are not vulnerable. 4. You use ratlperl, ccperl, or cqperl to run your own perl scripts, and those scripts use SSL connections. Remediation/Fixes Apply a fix pack as listed in the table below. The fix pack includes OpenSSL 1.0.2j. Affected Versions Applying the fix 9.0 through 9.0.0.2 Install Rational ClearCase Fix Pack 3 (9.0.0.3) for 9.0 8.0.1 through 8.0.1.12 Install Rational ClearCase Fix Pack 13 (8.0.1.13) for 8.0.1 8.0 through 8.0.0.19 Install Rational ClearCase Fix Pack 20 (8.0.0.20) for 8.0 7.1.2.x (all fix packs) 7.1.1.x (all fix packs) Customers on extended support contracts should contact 7.1.0.x (all fix packs) Customer Support for information. For 7.0.x, 7.1.x and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product. Workarounds and Mitigations None Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. Important note IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk. References Complete CVSS v3 Guide On-line Calculator v3 OpenSSL Project vulnerability website Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History * 7 December 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. Cross reference information Segment Product Component Platform Version Edition Software Rational Integrations: AIX, 7.1, 7.1.0.1, 7.1.0.2, Development ClearQuest IBM HP-UX, 7.1.1, 7.1.1.1, 7.1.1.2, Linux, 7.1.1.3, 7.1.1.4, 7.1.1.5, Solaris, 7.1.1.6, 7.1.1.7, 7.1.1.8, Windows 7.1.1.9, 7.1.2, 7.1.2.1, 7.1.2.10, 7.1.2.11, 7.1.2.12, 7.1.2.13, 7.1.2.14, 7.1.2.15, 7.1.2.16, 7.1.2.17, 7.1.2.18, 7.1.2.19, 7.1.2.2, 7.1.2.3, 7.1.2.4, 7.1.2.5, 7.1.2.6, 7.1.2.7, 7.1.2.8, 7.1.2.9, 8.0, 8.0.0.1, 8.0.0.10, 8.0.0.11, 8.0.0.12 8.0.0.13, 8.0.0.14, 8.0.0.15, 8.0.0.16, 8.0.0.17, 8.0.0.18, 8.0.0.19, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 8.0.0.8, 8.0.0.9, 8.0.1, 8.0.1.1, 8.0.1.10, 8.0.1.11, 8.0.1.12, 8.0.1.2, 8.0.1.3, 8.0.1.4, 8.0.1.5, 8.0.1.6, 8.0.1.7, 8.0.1.8, 8.0.1.9, 9.0, 9.0.0.1, 9.0.0.2 - --------------------------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 iQIVAwUBWEjgyYx+lLeg9Ub1AQiGCA/8DR8jn3FLqdoydnkC6J8u9QDf3ICieZJw Qk604ntlPU+E7wYJ1FTdhC3h7amYd+3OM52YufdLQsERWbTMgb6OefaXy4I/7puR S8OOVwFUcsW2nL2vZY5+3Ppex+7a93DgPLWFVgWWmye7YXDcpybN87UuEnicgfaM xcUsa+vVnNOBtVwSvl5U+LWuJF6txY3cZBCFlMY9n4b3H5O66Yf3sRHtql28XE7a 7wXERT/kK9HzWLbMnG4NSZjP5eHKjK+qc/xwVXbux2gQJF3n7ie2fpVqEQxxCl6s rPbdUV7mKJiNcQMtzjA+M4u0HivEkrgk8tC5dDXTGBKnYLYGpyMLzq6+X8w7glSj 0TrIGuHFzjQESys/LZaWiuDr+dM2Hc2lE9vQHvpll6tbKKdXmKCBM5yrMQ+O/TDw X1fc23glZoPXzZopwOoepKVXtLsi2s97/U+ZI8GwH4oNc84VbWcixd/kx4VRS3Fi wMOd3UlLKjYX3EEXVCCsaeMeIpmRrq6hPD47N6gwQLnWKNhLtgExM1hkIu9Z4ShK YvIUDZcjqRhltKDLkdMVvuh6QwKmtUTowIag9NWSguiMefgUPEYzROIRcLKHSR91 IMyHPgmHYDf6Cz3dS4ei3fDrRNdUQPzL9kfUDOcfY/MOx8rOSSkQ4sHGLYCLdrPG YixBQiv+1pc= =W92T -----END PGP SIGNATURE-----