Security Bulletin: IBM Streams may be affected by XMLsoft Libxml2 vulnerabilities

Summary

The libxml2 library, used by IBM Streams may have security vulnerabilities. IBM Streams has addressed the applicable CVEs.

Vulnerability Details

CVEID: 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 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**
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 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**
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 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)

Affected Products and Versions

The following versions may be impacted:

• IBM Streams Version 4.2.1.2 and earlier
• IBM InfoSphere Streams Version 4.1.1.4 and earlier
• IBM InfoSphere Streams Version 4.0.1.4 and earlier
• IBM InfoSphere Streams Version 3.2.1.6 and earlier
• IBM InfoSphere Streams Version 3.1.0.8 and earlier
• IBM InfoSphere Streams Version 3.0.0.6 and earlier

Remediation/Fixes

NOTE: Fix Packs are available on IBM Fix Central.

To remediate/fix this issue, follow the instructions below:

• Version 4.2.x: Apply 4.2.1 Fix Pack 3 (4.2.1.3) or higher.
• Version 4.1.x: Apply 4.1.1 Fix Pack 5 (4.1.1.5) or higher.
• Version 4.0.x: Apply 4.0.1 Fix Pack 5 (4.0.1.5) or higher.
• Versions 3.2.x, 3.1.x, and 3.0.x: For versions earlier than 4.x.x, IBM recommends upgrading to a fixed, supported version/release/platform of the product. Customers who cannot upgrade and need to secure their installation should open a PMR with IBM Technical Support and request assistance securing their InfoSphere Streams system against the vulnerabilities identified in this Security Bulletin.

Workarounds and Mitigations

None