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Security Bulletin: IBM Cognos Business Intelligence Server 2017Q4 Security Updater: IBM Cognos Business Intelligence Server is affected by multiple vulnerabilities.

Description

## Summary IBM Cognos Business Intelligence uses Libxml2. Multiple vulnerabilites in Libxml2 have been addressed. ## Vulnerability Details **CVEID:** [_CVE-2016-4658_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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-2017-7375_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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_](<https://vulners.com/cve/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) ## Affected Products and Versions IBM Cognos Business Intelligence Server 10.2.2 IBM Cognos Business Intelligence Server 10.2.1.1 IBM Cognos Business Intelligence Server 10.2.1 IBM Cognos Business Intelligence Server 10.2.0 ## Remediation/Fixes The recommended solution is to apply the fix for versions listed as soon as practical. [IBM Cognos Business Intelligence Server 10.2.2](<http://www-01.ibm.com/support/docview.wss?uid=swg24044320>) [IBM Cognos Business Intelligence Server 10.2.1.1](<http://www-01.ibm.com/support/docview.wss?uid=swg24044320>) [IBM Cognos Business Intelligence Server 10.2.1](<http://www-01.ibm.com/support/docview.wss?uid=swg24044320>) [IBM Cognos Business Intelligence Server 10.2.0](<http://www-01.ibm.com/support/docview.wss?uid=swg24044320>) ## Workarounds and Mitigations None ##


Affected Software


CPE Name Name Version
cognos business intelligence 10.2
cognos business intelligence 10.2.1
cognos business intelligence 10.2.1.1
cognos business intelligence 10.2.2

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