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AUSCERT External Security Bulletin Redistribution
ESB-2017.2667
Security Bulletin: IBM Streams may be affected by XMLsoft
Libxml2 vulnerabilities
23 October 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Streams
Publisher: IBM
Operating System: Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-9050 CVE-2017-9049 CVE-2017-9048
CVE-2017-9047 CVE-2017-8872 CVE-2017-7376
CVE-2017-7375 CVE-2017-5969
Reference: ASB-2017.0080
ESB-2017.2550
ESB-2017.2376.2
ESB-2017.2343
ESB-2017.2122
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg22009670
http://www.ibm.com/support/docview.wss?uid=swg22009715
Comment: This bulletin contains two (2) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: IBM Streams may be affected by XMLsoft Libxml2
vulnerabilities
Document information
More support for: IBM Streams
Software version: 3.0, 3.1, 3.2, 3.2.1, 4.0, 4.0.1, 4.1, 4.1.1, 4.2, 4.2.1
Operating system(s): Linux
Software edition: All Editions
Reference #: 2009670
Modified date: 20 October 2017
Security Bulletin
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:
o IBM Streams Version 4.2.1.2 and earlier
o IBM InfoSphere Streams Version 4.1.1.4 and earlier
o IBM InfoSphere Streams Version 4.0.1.4 and earlier
o IBM InfoSphere Streams Version 3.2.1.6 and earlier
o IBM InfoSphere Streams Version 3.1.0.8 and earlier
o 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:
o Version 4.2.x: Apply 4.2.1 Fix Pack 3 (4.2.1.3) or higher.
o Version 4.1.x: Apply 4.1.1 Fix Pack 5 (4.1.1.5) or higher.
o Version 4.0.x: Apply 4.0.1 Fix Pack 5 (4.0.1.5) or higher.
o 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
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
Created: October 16, 2017
Updated: October 20, 2017
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
- -------------------------------------------------------------------------------
Security Bulletin: IBM Streams may be affected by XMLsoft Libxml2
vulnerabilities
Document information
More support for: IBM Streams
Software version: 3.0, 3.1, 3.2, 3.2.1, 4.0, 4.0.1, 4.1, 4.1.1, 4.2, 4.2.1
Operating system(s): Linux
Software edition: All Editions
Reference #: 2009715
Modified date: 20 October 2017
Security Bulletin
Summary
The libxml2 library, used by IBM Streams may have security vulnerabilities. IBM
Streams has addressed the applicable CVEs.
Vulnerability Details
CVEID: 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 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
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 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
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 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
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 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
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 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)
Affected Products and Versions
The following versions may be impacted:
o IBM Streams Version 4.2.1.2 and earlier
o IBM InfoSphere Streams Version 4.1.1.4 and earlier
o IBM InfoSphere Streams Version 4.0.1.4 and earlier
o IBM InfoSphere Streams Version 3.2.1.6 and earlier
o IBM InfoSphere Streams Version 3.1.0.8 and earlier
o 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:
o Version 4.2.x: Apply 4.2.1 Fix Pack 3 (4.2.1.3) or higher.
o Version 4.1.x: Apply 4.1.1 Fix Pack 5 (4.1.1.5) or higher.
o Version 4.0.x: Apply 4.0.1 Fix Pack 5 (4.0.1.5) or higher.
o 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
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
Created: October 16, 2017
Updated: October 20, 2017
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
- --------------------------END INCLUDED TEXT--------------------
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