Security Bulletin: Multiple security vulnerabilities affect IBM WebSphere Application Server for Bluemix

Summary

Apache Struts vulnerabilities affect WebSphere Application Server and WebSphere Application Server Hypervisor Edition Administration Console. There is a potential denial of service with IBM WebSphere Application Server when using SIP services. There are several vulnerabilities that may affect IBM HTTP Server that is used by WebSphere Application Server. There is a vulnerability that allows redirecting of HTTP traffic with CGI applications that may affect IBM HTTP Server (IHS). This vulnerability is known as “HTTPOXY”. There is an Information Disclosure Vulnerability in IBM WebSphere Application Server. There is a potential bypass security restriction vulnerability in IBM WebSphere Application Server. This will only occur in environments that have the webcontainer custom property HttpSessionIdReuse enabled.

Vulnerability Details

CVEID: CVE-2016-1181**
DESCRIPTION:** Apache Struts could allow a remote attacker to execute arbitrary code on the system, caused by the failure to protect against unintended remote operations against components on server memory by the ActionForm instance. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113852 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:H/A:H)

CVEID: CVE-2016-1182**
DESCRIPTION:** Apache Struts could allow a remote attacker to bypass security restrictions, caused by the improper validation of input by the Validator. An attacker could exploit this vulnerability to modify validation rules and error messages.
CVSS Base Score: 4.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113853 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:L/A:L)

CVEID: CVE-2016-2960**
DESCRIPTION:** IBM WebSphere Application Server could be vulnerable to a denial of service when using SIP services. A remote attacker could cause a denial of service with specially-crafted SIP messages.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113805 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:L)

CVEID: CVE-2012-0876**
DESCRIPTION:** Expat is vulnerable to a denial of service, caused by insufficient randomization of hash data structures. By sending multiple specially-crafted HTTP POST requests to an affected application containing conflicting hash key values, a remote attacker could exploit this vulnerability to cause the consumption of CPU resources.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/73868 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2012-1148**
DESCRIPTION:** Expat is vulnerable to a denial of service, caused by a memory leak in poolGrow when handling XML data. A remote attacker could exploit this vulnerability to cause the application using the vulnerable XML parsing library to crash.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/73867 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2016-4472**
DESCRIPTION:** Expat XML parser is vulnerable to a denial of service, caused by the removal by compilers with certain optimization settings. By using a specially-crafted XML data, a remote attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/114683 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)

CVEID: CVE-2016-0718**
DESCRIPTION:** Expat XML parser is vulnerable to a denial of service, caused by an out-of-bounds read within XML parser. By using a specially-crafted file, a remote attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/113408 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)

CVEID: CVE-2016-5387**
DESCRIPTION:** Apache HTTP Server could allow a remote attacker to redirect HTTP traffic of CGI application, caused by the lack of protection of untrusted client data in the HTTP_PROXY environment variable. By using a specially-crafted Proxy header in a HTTP request, a remote attacker could exploit this vulnerability to redirect outbound HTTP traffic to arbitrary proxy server, also known as the “HTTPOXY” vulnerability.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/115090 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:H/A:H)

CVEID: CVE-2016-0377**
DESCRIPTION:** IBM WebSphere Application Server could allow a remote attacker to obtain sensitive information caused by the improper setting of a CSRFtoken cookie.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112238 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2016-0385**
DESCRIPTION:** IBM WebSphere Application Server could allow a remote attacker to bypass security restrictions caused by a buffer overflow. This could allow the attacker to view unauthorized data.
CVSS Base Score: 3.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112359 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

All vulnerabilities affect the following versions and releases of IBM WebSphere Application Server:

• Version 9.0
• Version 8.5 and 8.5.5 Full Profile and Liberty

Remediation/Fixes

To patch an existing service instance refer to the IBM WebSphere Application Server bulletins:
Security Bulletin: Vulnerabilities in Apache Struts affects IBM WebSphere Application Server (CVE-2016-1181 and CVE-2016-1182)

Security Bulletin: Potential denial of service with SIP Services (CVE-2016-2960)

Security Bulletin: Redirect HTTP traffic vulnerability may affect IBM HTTP Server (CVE-2016-5387)****

Security Bulletin: Information Disclosure in IBM WebSphere Application Server (CVE-2016-0377)

Security Bulletin: Bypass security restrictions in WebSphere Application Server (CVE-2016-0385)

When creating a new service instance, the following maintenance must be manually applied to an IBM WebSphere Application Server Version 9.0:
Security Bulletin: Vulnerabilities in Apache Struts affects IBM WebSphere Application Server (CVE-2016-1181 and CVE-2016-1182)

Security Bulletin: Potential denial of service with SIP Services (CVE-2016-2960)

Security Bulletin: Redirect HTTP traffic vulnerability may affect IBM HTTP Server (CVE-2016-5387)****

When creating a new service instance, the following maintenance must be manually applied to an IBM WebSphere Application Server Version 8.5.5 to 16.0.0.2 Liberty:
Security Bulletin: Potential denial of service with SIP Services (CVE-2016-2960)

Security Bulletin: Redirect HTTP traffic vulnerability may affect IBM HTTP Server (CVE-2016-5387)****

Security Bulletin: Bypass security restrictions in WebSphere Application Server (CVE-2016-0385)