Security Bulletin: IBM Forms Viewer may be affected by an Apache Xerces-C XML Parser library vulnerability (CVE-2016-0729, CVE-2016-4463)

Summary

An IBM Form (XFDL document) that contains a specially crafted mark-up could crash IBM Forms Viewer. This may expose a vulnerability in its use of the Apache Xerces-C XML Parser library.

Vulnerability Details

CVEID: CVE-2016-0729**
DESCRIPTION:** Apache Xerces-C XML Parser library is vulnerable to a denial of service, caused by improper bounds checking during processing and error reporting. By sending specially crafted input documents, an attacker could exploit this vulnerability to cause the library to crash or possibly execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111028 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-2016-4463**
DESCRIPTION:** Apache Xerces-C XML Parser library is vulnerable to a denial of service, caused by a stack-based buffer overflow when parsing a deeply nested DTD. A remote attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114596 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

IBM Forms Viewer 8.0.1
IBM Forms Viewer 8.1
IBM Forms Viewer 8.2
IBM Forms Viewer 8.2.1

Remediation/Fixes

Product

| VRMF|APAR|Remediation
—|—|—|—
IBM Forms Viewer| 8.0.1.| LO89917| Download and install LO89917
IBM Forms Viewer| 8.1.0.| LO89917| Download and install LO89917
IBM Forms Viewer| 8.2.0.| LO89917| Download and install LO89917
IBM Forms Viewer| 8.2.1.| LO89917

Workarounds and Mitigations

None