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AUSCERT External Security Bulletin Redistribution
ESB-2019.4789
Security Bulletin: CVE-2019-10072
23 December 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM UrbanCode Release
Publisher: IBM
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-10072
Reference: ESB-2019.3151
ESB-2019.2688
ESB-2019.2230
Original Bulletin:
https://www.ibm.com/support/pages/node/1127991
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Security Bulletin: CVE-2019-10072
Document Information
Product : IBM UrbanCode Release
Component : IBM UrbanCode Release
Software version : 6.2.2.*
Operating system(s): Platform Independent
Edition : Core
Summary
The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection
window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and
8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection
window (stream 0) clients were able to cause server-side threads to block
eventually leading to thread exhaustion and a DoS.
Vulnerability Details
CVEID: CVE-2019-10072
DESCRIPTION: The fix for CVE-2019-0199 was incomplete and did not address HTTP
/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to
9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the
connection window (stream 0) clients were able to cause server-side threads to
block eventually leading to thread exhaustion and a DoS.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities
/162806 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
+---------------------------+----------+
|Affected Product(s) |Version(s)|
+---------------------------+----------+
|UCR - IBM UrbanCode Release|All |
+---------------------------+----------+
Remediation/Fixes
upgrade to 6.2.3.0
Workarounds and Mitigations
None
Change History
10 Dec 2019: Initial Publication
*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.
Document Location
Worldwide
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