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Security Bulletin: Vulnerabilities in Apache Tomcat affect the IBM FlashSystem models 840 and 900

Description

## Summary There are vulnerabilities in Apache Tomcat to which the IBM® FlashSystem™ 840 and FlashSystem™ 900 are 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 FlashSystem 840 machine type and models (MTMs) affected include 9840-AE1 and 9843-AE1. FlashSystem 900 MTMs affected include 9840-AE2 and 9843-AE2. Code versions affected include supported VRMFs: · 1.4.0.0 – 1.4.5.0 · 1.3.0.0 – 1.3.0.6 ## Remediation/Fixes _MTMs_ | _VRMF_| _APAR_| _Remediation/First Fix_ ---|---|---|--- **FlashSystem ****840 MTM: ** 9840-AE1 & 9843-AE1 **FlashSystem 900 MTMs:** 9840-AE2 & 9843-AE2| _Code fixes are now available, the minimum VRMF containing the fix depends on the code stream: ___ Fixed code VRMF .__ _1.4 stream: 1.4.6.0 _ _1.3 stream: 1.3.0.7_| _ __N/A_| [**_FlashSystem 840 fixes_**](<http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Flash%2Bhigh%2Bavailability%2Bsystems&product=ibm/StorageSoftware/IBM+FlashSystem+840&release=All&platform=All&function=all>)** **and [**_FlashSystem 900 fixes_**](<http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Flash%2Bhigh%2Bavailability%2Bsystems&product=ibm/StorageSoftware/IBM+FlashSystem+900&release=All&platform=All&function=all>)** **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. 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Affected Software


CPE Name Name Version
FlashSystem 840 machine type and models (MTMs) affected include 9840-AE1 and 9843-AE1. FlashSystem 900 MTMs affected include 9840-AE2 and 9843-AE2. Code versions affected include supported VRMFs: · 1.4.0.0 – 1.4.5.0 · 1.3.0.0 – 1.3.0.6

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