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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2830 Security Bulletin: Multiple OpenSource Expat XML Vulnerabilities affect IBM DB2 Net Search Extender for Linux, Unix and Windows 30 November 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM DB2 Publisher: IBM Operating System: AIX HP-UX Linux variants Solaris Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-5300 CVE-2016-4472 CVE-2016-0718 CVE-2015-2716 CVE-2015-1283 CVE-2012-6702 CVE-2012-1148 CVE-2012-1147 CVE-2012-0876 Reference: ASB-2016.0103 ASB-2016.0081 ASB-2016.0075 ESB-2016.2787 ESB-2016.2687 Original Bulletin: https://www-01.ibm.com/support/docview.wss?uid=swg21992933 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Multiple OpenSource Expat XML Vulnerabilities affect IBM DB2 Net Search Extender for Linux, Unix and Windows Document information More support for: DB2 for Linux, UNIX and Windows Software version: 9.7, 10.1, 10.5, 11.1 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Software edition: Advanced Enterprise Server, Advanced Workgroup Server, Enterprise Server, Express, Express-C, Personal, Workgroup Server Reference #: 1992933 Modified date: 21 November 2016 Security Bulletin Summary There are multiple vulnerabilities in open source expat XML parser that is used in DB2 Net Search Extender. Vulnerability Details CVEID: CVE-2012-0876 DESCRIPTION: Expat is vulnerable to a denial of service, caused by insufficient randomization of hash data structures. By sending multiple specially-crafted HTTP POST requests to an affected application containing conflicting hash key values, a remote attacker could exploit this vulnerability to cause the consumption of CPU resources. CVSS Base Score: 5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/73868 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) CVEID: CVE-2012-1147 DESCRIPTION: Expat is vulnerable to a denial of service, caused by a resource leak in readfilemap.c when handling XML data. A remote attacker could exploit this vulnerability to cause the application using the vulnerable XML parsing library to crash. CVSS Base Score: 5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/73866 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) CVEID: CVE-2012-1148 DESCRIPTION: Expat is vulnerable to a denial of service, caused by a memory leak in poolGrow when handling XML data. A remote attacker could exploit this vulnerability to cause the application using the vulnerable XML parsing library to crash. CVSS Base Score: 5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/73867 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) CVEID: CVE-2015-1283 DESCRIPTION: Expat, as used in Google Chrome, is vulnerable to a heap-based buffer overflow, caused by multiple integer overflows in the XML_GetBuffer function. By persuading a victim to open a specially carfetd XML file, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash. CVSS Base Score: 6.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104964 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L) CVEID: CVE-2015-2716 DESCRIPTION: Expat, as used in Mozilla Firefox and Thunderbird, is vulnerable to a buffer overflow, caused by improper bounds checking by the XML parser. By persuading a victim to open a specially crafted XML file, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash. CVSS Base Score: 6.8 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103214 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P) CVEID: CVE-2016-4472 DESCRIPTION: Expat XML parser is vulnerable to a denial of service, caused by the removal by compilers with certain optimization settings. By using a specially-crafted XML data, a remote attacker could exploit this vulnerability to cause the application to crash. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114683 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-2016-0718 DESCRIPTION: Expat is vulnerable to a buffer overflow, caused by improper bounds checking when processing malformed XML data. By using the Expat library, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the victim or cause the application to crash. CVSS Base Score: 9.8 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113408 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVEID: CVE-2012-6702 DESCRIPTION: Expat, when used in a parser that has not called XML_SetHashSalt or passed it a seed of 0, could provide weaker than expected security. An attacker could exploit this vulnerability using attack vectors involving use of the srand function to defeat cryptographic protection mechanisms. CVSS Base Score: 5.9 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114541 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:H/A:N) CVEID: CVE-2016-5300 DESCRIPTION: Expat XML parser is vulnerable to a denial of service, caused by the failure to use sufficient entropy for hash initialization. By using a specially-crafted identifiers in an XML document, a remote attacker could exploit this vulnerability to cause the application to crash. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114435 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) Affected Products and Versions DB2 Net Search Extender V9.7, V10.1, V10.5 and V11.1 for all supported platforms Remediation/Fixes Release V9.7 V10.1 V10.5 V11.1 APAR Number IT17226 IT17231 IT17232 IT17233 Linux AMD 64bit V9.7 LinuxAMD64 V10.1 LinuxAMD64 V10.5 LinuxAMD64 V11.1 LinuxAMD64 Linux 32bit N/A N/A V10.5 Linux32 N/A Windows 64bit V9.7 NTX64 V10.1 NTX64 V10.5 NTX64 V11.1 NTX64 Windows 32bit V9.7 NT32 V10.1 NT32 V10.5 NT32 N/A AIX 64bit V9.7 AIX64 V10.1 AIX64 V10.5 AIX64 V11.1 AIX64 zLinux 64bit V9.7 zLinux64 V10.1 zLinux64 V10.5 zLinux64 V11.1 zLinux64 Sun 64bit V9.7 Sun64 V10.1 Sun64 V10.5 Sun64 N/A HP 64bit V9.7 HP64 V10.1 HP64 V10.5 HP64 N/A 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 Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 24 October 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. - --------------------------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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWD4pbYx+lLeg9Ub1AQhj7g/9EvOsQm03YsmFLkzFPG0OrwyYiJzmeM4G eDmXYIYWAU/LILCD17Mo209jX/2MntRM5kbX00goNdrmD0z2HzdgPpsJpzZLgeE7 0zZvQB4MavKkYu9A0xrhB3G/bZZfWuiUfLKzLZFWuhDXvs96Httm5cYaehRNHWCY dVnWYKy+if5LVv7ctK5yDNNkCTSWQbGXi2g2vYT3c0rBcAZAyqGSHZrSAjeO8Ebm qsxFwzzhRuOvVEBPn0MpxpBJmYSO8bFCStYUviKah0sx6lDAQN/ZOp1ZhxdLFZbz liJXBHJlPeZaGHoGjwvqvcQGecdqOJopOtMr5yvuL+b6wHardBNOJmDUeHc6mKoT JMpXPaYylQ6c63T/GYnIXmpYVrN8xtIB1hTsBs9dX+6q6Hrck9gqj9s5XFeKke6M J58t0KkHzJSKUXkIyVpU1VoE3a046q7mgsdHIPT9A8ixPg8eHHoXLqw4vOQmXznu Ppc134CrXpTMUfO6dmruLuJChCd+JKNvJ+OZYQ6WjhvpyvlALRcJpXPiKWgQYItB 7BRpezlA9S4l539bz1XlNjVGSfB3j4sdWAVhogCjLw8frOzZ1eoklyKE7j3uLBh7 8u/WU3NCsOBViPVSsSIn5jAWuOqegqz1Zox0eNHIDPeru5Y7agX/eDs72yQFQ5hw hhICLPa/Ejs= =frpA -----END PGP SIGNATURE-----