Security Bulletin: Rational Systems Tester is affected by Libxml2 vulnerabilities (CVE-2016-4447, CVE-2016-4448, CVE-2016-4449)

Summary

A set of Libxml2 vulnerabilities were disclosed by the Libxml2 Project. Libxml2 is used by Rational Systems Tester. Rational Systems Tester has addressed the applicable CVEs.

Vulnerability Details

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&gt; 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&gt; 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-2016-4449**
DESCRIPTION:** libxml2 could allow a remote attacker to obtain sensitive information, caused by a XML external entity (XXE) error when processing XML data by the XML parser. A remote attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113524&gt; 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:N/A:N)

Affected Products and Versions

Rational Systems Tester 3.3, 3.3.0.1, 3.3.0.2, 3.3.0.3, 3.3.0.4, 3.3.0.5, 3.3.0.6, 3.3.0.7, 3.3.0.7 Interim Fix 1, 3.3.0.7 Interim Fix 2, 3.3.0.7 Interim Fix 3, 3.3.0.7 Interim Fix 4

Remediation/Fixes

Upgrade to Rational Systems Tester Interim Fix 5 for 3.3.0.7

Workarounds and Mitigations

None