Security Bulletin: Multiple vulnerabilities in libxml2 affect IBM Cognos Metrics Manager (CVE-2016-3705, CVE-2016-4447, CVE-2016-4448)

Summary

The vulnerabilities have been addressed in the libxml2 component of IBM Cognos Metrics Manager

Vulnerability Details

CVEID: CVE-2016-3705**
DESCRIPTION:** libxml2 is vulnerable to a stack-based buffer overflow, caused by an out-of-bounds read of xmlParserEntityCheck() and xmlParseAttValueComplex() functions in parser.c. 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: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112885 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-2016-4447**
DESCRIPTION:** libxml2 is vulnerable to a denial of service, caused by a heap-based buffer overflow. By persuading a victim to open a specially crafted XML file, a remote attacker could overflow a buffer and cause the application to crash.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113522 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4448**
DESCRIPTION:** libxml2 could allow a remote attacker to execute arbitrary code on the system, caused by a format string error. By using a specially crafted html file containing malicious format specifiers, a remote attacker could exploit this vulnerability to execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113523 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 Metrics Manager 10.2.2
• IBM Cognos Metrics Manager 10.2.1
• IBM Cognos Metrics Manager 10.2
• IBM Cognos Metrics Manager 10.1.1

Remediation/Fixes

The recommended solution is to apply the fix as soon as practical. As the fix is in a shared component across the Business Intelligence portfolio, applying the BI Interim Fix will resolve the issue. Note that the prerequisites named in the links are also satisfied by an IBM Cognos Metrics Manager install of the same version.

| Version| Interim Fix
—|—|—
IBM Cognos Metrics Manager| 10.2.2| IBM Cognos Business Intelligence 10.2.2 Interim Fix 13
IBM Cognos Metrics Manager| 10.2.1| IBM Cognos Business Intelligence 10.2.1 Interim Fix 18
IBM Cognos Metrics Manager| 10.2| IBM Cognos Business Intelligence 10.2 Interim Fix 21
IBM Cognos Metrics Manager| 10.1.1| IBM Cognos Business Intelligence 10.1.1 Interim Fix 20

Workarounds and Mitigations

None