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Security Bulletin: Vulnerabilities in Apache Tomcat affect the IBM FlashSystem model V840

Description

## Summary There are vulnerabilities in Apache Tomcat to which the IBM® FlashSystem™ V840 is susceptible. An exploit of these vulnerabilities (CVE-2016-6816, CVE-2016-6817, and CVE-2016-6796) could allow a remote attacker to obtain sensitive information, cause an application to enter an infinite loop, or bypass a configured SecurityManager ## Vulnerability Details **CVEID:** [_CVE-2016-6816_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6816>) **DESCRIPTION:** Apache Tomcat is vulnerable to HTTP response splitting attacks, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to inject arbitrary HTTP headers and cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning or cross-site scripting, and possibly obtain sensitive information. CVSS Base Score: 6.1 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/119158_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/119158>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) **CVEID:** [_CVE-2016-6817_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6817>) **DESCRIPTION:** Apache Tomcat is vulnerable to a denial of service. By sending a specially crafted HTTP/2 header, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop. CVSS Base Score: 7.5 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/119156_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/119156>) 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:H) **CVEID:** [_CVE-2016-6796_](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6796>) **DESCRIPTION:** Apache Tomcat could allow a local attacker to bypass security restrictions. By modifying configuration parameters for the JSP Servlet, an attacker could exploit this vulnerability to bypass a configured SecurityManager. CVSS Base Score: 4 CVSS Temporal Score: See [_https://exchange.xforce.ibmcloud.com/vulnerabilities/118404_](<https://exchange.xforce.ibmcloud.com/vulnerabilities/118404>) for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) ## Affected Products and Versions **Affected Products and Versions of FlashSystem V840’s two node types ** _Storage Node_ · Machine Type Models (MTMs) affected include 9846-AE1 and 9848-AE1 · Code versions affected include supported VRMFs: o 1.4.0.0 – 1.4.5.1 o 1.3.0.0 – 1.3.0.6 _Controller Node _ · MTMs affected include 9846-AC0, 9848-AC0, 9846-AC1, and 9848-AC1 · Code versions affected include supported VRMFs: o 7.7.0.0 – 7.7.1.5 o 7.8.0.0 – 7.8.0.1 ## Remediation/Fixes _V840 MTMs_ | _VRMF_| _APAR_| _Remediation/First Fix_ ---|---|---|--- **Storage nodes:** 9846-AE1 & 9848-AE1 **Controller nodes:** 9846-AC0, 9846-AC1, 9848-AC0, & 9848-AC1| _Code fixes are now available, the minimum VRMF containing the fix depends on the code stream: ___Storage Node VRMF __ _1.4 stream: 1.4.6.0 _ _1.3 stream: 1.3.0.7_ __Controller Node VRMF __ _7.7 stream: 7.7.1.6_ _7.8 stream: 7.8.0.2_| _ __N/A_| [**_FlashSystem V840 fixes_**](<http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Flash%2Bhigh%2Bavailability%2Bsystems&product=ibm/StorageSoftware/IBM+FlashSystem+V840&release=1.0&platform=All&function=all>)** **for storage and controller node** **are available @ IBM’s Fix Central ## Workarounds and Mitigations None ## Get Notified about Future Security Bulletins Subscribe to [My Notifications](< http://www-01.ibm.com/software/support/einfo.html>) to be notified of important product support alerts like this. ### References [Complete CVSS v2 Guide](<http://www.first.org/cvss/v2/guide> "Link resides outside of ibm.com" ) [On-line Calculator v2](<http://nvd.nist.gov/CVSS-v2-Calculator> "Link resides outside of ibm.com" ) [Complete CVSS v3 Guide](<http://www.first.org/cvss/user-guide> "Link resides outside of ibm.com" ) [On-line Calculator v3](<http://www.first.org/cvss/calculator/3.0> "Link resides outside of ibm.com" ) Off ## Related Information [IBM Secure Engineering Web Portal](<http://www.ibm.com/security/secure-engineering/bulletins.html>) [IBM Product Security Incident Response Blog](<http://www.ibm.com/blogs/psirt>) ## Acknowledgement None ## Change History 13 April 2017 Original Version Published *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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions. 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Affected Software


CPE Name Name Version
Affected Products and Versions of FlashSystem V840’s two node types Storage Node · Machine Type Models (MTMs) affected include 9846-AE1 and 9848-AE1 · Code versions affected include supported VRMFs: o 1.4.0.0 – 1.4.5.1 o 1.3.0.0 – 1.3.0.6 Controller Node · MTMs affected include 9846-AC0, 9848-AC0, 9846-AC1, and 9848-AC1 · Code versions affected include supported VRMFs: o 7.7.0.0 – 7.7.1.5 o 7.8.0.0 – 7.8.0.1

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