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Security Bulletin: Multiple Vulnerabilities in libxml2 affects IBM Cognos Analytics

Description

## Summary This bulletin addresses several security vulnerabilities that are fixed in IBM Cognos Analytics 11.0.10.0. IBM Cognos Analytics uses the libxml2 library . Mulitple libxml2 vulnerabilities have been addressed. A vulnerablity was addressed whereby detailed technical error messages can allow an adversary to gain information about the application and database that could be used to conduct further attacks. ## Vulnerability Details **CVEID:** [_CVE-2016-4658_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4658>)** DESCRIPTION:** The libxml2 library, as used in multiple products, could allow a remote attacker to execute arbitrary code on the system, caused by a memory corruption error. An attacker could exploit this vulnerability using a specially crafted XML document to execute arbitrary code on the system or cause a denial of service. CVSS Base Score: 9.8 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/117175_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/117175>) 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-2017-9050_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9050>)** DESCRIPTION:** libxml2 is vulnerable to a heap-based buffer overflow, caused by a buffer over-read flaw in the xmlDictAddString function in dict.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/126277_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/126277>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) **CVEID:** [_CVE-2017-9049_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9049>)** DESCRIPTION:** libxml2 is vulnerable to a heap-based buffer overflow, caused by a buffer over-read flaw in the xmlDictComputeFastKey function in dict.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/126276_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/126276>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) **CVEID:** [_CVE-2017-9048_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9048>)** DESCRIPTION:** libxml2 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking of the strlen(buf) size in the xmlSnprintfElementContent function in valid.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/126275_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/126275>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) **CVEID:** [_CVE-2017-9047_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9047>)** DESCRIPTION:** libxml2 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the xmlSnprintfElementContent function in valid.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause application to crash. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/126274_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/126274>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) **CVEID:** [_CVE-2017-8872_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8872>)** DESCRIPTION:** libxml2 is vulnerable to a buffer overflow, caused by a a buffer-over-read flaw in the htmlParseTryOrFinish function in HTMLparser.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause a denial of service condition or obtain sensitive information on the system. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/125890_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/125890>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) **CVEID:** [_CVE-2017-7376_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7376>)** DESCRIPTION:** libxml2 is vulnerable to a denial of service, caused by the incorrect limit used when calculating the port value in xmlParse3986Port function. An attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 5.9 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/128276_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/128276>) 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-2017-7375_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7375>)** DESCRIPTION:** libxml2 could allow a remote attacker to obtain sensitive information, caused by missing validation for external entities in xmlParsePEReference. By sending specially-crafted XML data, an attacker could exploit this vulnerability to obtain sensitive information or cause a denial of service. CVSS Base Score: 6.5 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/128275_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/128275>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L) **CVEID:** [_CVE-2017-5969_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5969>)** DESCRIPTION:** libxml2 is vulnerable to a denial of service, caused by a NULL pointer dereference in the xmlSaveDoc functionality when used in recover mode. By persuading a victim to open a specially crafted XML document, an attacker could exploit this vulnerability to cause the application to crash. CVSS Base Score: 5.5 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/128274_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/128274>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) **CVEID:** [_CVE-2017-16932_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16932>)** DESCRIPTION:** Xmlsoft libxml2 is vulnerable to a denial of service, caused by an infinite recursion issue in parameter entities. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to exhaust available memory on the system. CVSS Base Score: 7.5 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/135489_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/135489>) 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-2017-16931_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16931>)** DESCRIPTION:** Xmlsoft libxml2 is vulnerable to a buffer overflow, caused by improper handling of parameter-entity references in xmlParserHandlePEReference function. By using a percent character in a DTD name, a remote attacker could overflow a buffer and execute arbitrary code on the system. CVSS Base Score: 7.3 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/135488_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/135488>) 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:L/A:L) **CVEID:** [_CVE-2016-9711_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9711>)** DESCRIPTION:** IBM Predictive Solutions Foundation (formerly PMQ) reveals sensitive information in detailed error messages that could aid an attacker in further attacks against the system. CVSS Base Score: 5.3 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/119619_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/119619>) 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) ## Affected Products and Versions IBM Cognos Analytics Versions 11.0.0.0 to 11.0.9.0 ## Remediation/Fixes The recommended solution is to apply IBM Cognos Analytics 11.0.10.0 as soon as practical. [Downloading IBM Cognos Analytics 11.0.10.0](<http://www-01.ibm.com/support/docview.wss?uid=swg24044517>) ## Workarounds and Mitigations None ## Get Notified about Future Security Bulletins Subscribe to [My Notifications](< http://www-01.ibm.com/software/support/einfo.html>) to be notified of important product support alerts like this. ### References [Complete CVSS v2 Guide](<http://www.first.org/cvss/v2/guide> "Link resides outside of ibm.com" ) [On-line Calculator v2](<http://nvd.nist.gov/CVSS-v2-Calculator> "Link resides outside of ibm.com" ) [Complete CVSS v3 Guide](<http://www.first.org/cvss/user-guide> "Link resides outside of ibm.com" ) [On-line Calculator v3](<http://www.first.org/cvss/calculator/3.0> "Link resides outside of ibm.com" ) Off ## Related Information [IBM Secure Engineering Web Portal](<http://www.ibm.com/security/secure-engineering/bulletins.html>) [IBM Product Security Incident Response Blog](<http://www.ibm.com/blogs/psirt>) ## Change History 16 March 2018: 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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions. [{"Product":{"code":"SSTSF6","label":"IBM Cognos Analytics"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"Not Applicable","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.0","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]


Affected Software


CPE Name Name Version
IBM Cognos Analytics 11.0

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