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AUSCERT External Security Bulletin Redistribution
ESB-2019.3428
Security Bulletin: Security Vulnerabilties exist in IBM Cognos Controller
10 September 2019
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AusCERT Security Bulletin Summary
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Product: IBM Cognos Controller
Publisher: IBM
Operating System: Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-4175 CVE-2019-4171
Original Bulletin:
https://www.ibm.com/support/pages/security-bulletin-security-vulnerabilties-exist-ibm-cognos-controller
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Security Bulletin: Security Vulnerabilties exist in IBM Cognos Controller
Document Information
More support for:
Cognos Controller
Software version:
10.4.1, 10.4.0, 10.3.1, 10.3.0
Operating system(s):
Windows
Reference #:
1072744
Security Bulletin
Summary
Security Vulnerabilities exist in IBM Cognos Controller.
When performing security testing, you might encounter a "Missing Secure
Attribute in Encrypted Session (SSL) Cookie" error message. IBM Cognos
Controller versions 10.4.1, 10.4.0, 10.3.1 and 10.3.0, by default, do not have
this setting enabled. If this attribute is not set, it may be possible to steal
user and session information (cookies) that was sent during an encrypted
session.
The Lucky 13 attack is a crystallographic timing attack against implementations
of the Transport Layer Security (TLS) protocol that use the CBC mode of
operation. An attacker could perform man in the middle attacks to successfully
obtain plain text from the secure channel. IBM Cognos Controller versions
10.4.1 and 10.4.0 could be vulnerable to this attack.
Both vulnerabilities can be addressed by implementing the fix referenced below.
Vulnerability Details
The following vulnerability affects IBM Cognos Controller 10.4.1 and 10.4.0
only:
CVEID: CVE-2019-4175
DESCRIPTION: IBM Cognos Controller uses weaker than expected cryptographic
algorithms that could allow an attacker to decrypt highly sensitive
information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
158880 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:N)
The following vulnerability affects Cognos Controller 10.4.1, 10.4.0, 10.3.1
and 10.3.0:
CVEID: CVE-2019-4171
DESCRIPTION: IBM Cognos Controller does not set the secure attribute on
authorization tokens or session cookies. This could allow an attacker to obtain
sensitive information using man in the middle techniques.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
158876 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
IBM Cognos Controller 10.4.1
IBM Cognos Controller 10.4.0
IBM Cognos Controller 10.3.1
IBM Cognos Controller 10.3.0
Remediation/Fixes
See Workarounds and Mitigations below
Workarounds and Mitigations
Please implement the fix referenced below:
IBM Cognos Controller 10.4.0.0 SF001
Please note: the same configuration steps apply to all applicable versions.
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
References
Complete CVSS v3 Guide
On-line Calculator v3
Off
Related Information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Lucky13 attack
Change History
Original Version Published: September 9, 2019
*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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