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AUSCERT External Security Bulletin Redistribution
IBM QRadar WinCollect Agent Does Not Verify TLS Syslog
27 May 2019
AusCERT Security Bulletin Summary
Product: IBM QRadar SIEM
Operating System: Linux variants
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2019-4264
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Security Bulletin: IBM QRadar WinCollect Agent Does Not Verify TLS Syslog
More support for: IBM QRadar SIEM
Software version: 7.2.8
Operating system(s): Linux
Software edition: All Editions
Reference #: 0885464
Modified date: 24 May 2019
When configured for TLS Syslog the Wincollect agent does not verify the
authenticity or accuracy of the server certificate. Even when a
certificate is specified within the WinCollect configuration it is
ignored, and any certificate presented by the server is blindly accepted
while negotiating TLS.
Description: IBM QRadar WinCollect could allow an attacker to obtain
sensitive information by spoofing a trusted entity using man in the middle
techniques due to not validating or incorrectly validating a certificate.
CVSS Base Score: 5.9
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/160072 for the
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
Affected Products and Versions
WinCollect Agent 7.1.2 - WinCollect Agent 7.2.8 Patch 2 (32-bit)
WinCollect Agent 7.1.2 - WinCollect Agent 7.2.8 Patch 2 (64-bit)
WinCollect Agent 7.2.9 (32-bit)
WinCollect Agent 7.2.9 (64-bit)
Workarounds and Mitigations
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IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
The vulnerability was reported to IBM by Steven Thompson and Jack Bahbah
May 24th 2019: First Publish
*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.
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
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