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AUSCERT External Security Bulletin Redistribution
ESB-2020.0643
Security Bulletin: WebSphere Liberty susceptible to HTTP2
implementation vulnerablility.
24 February 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM MobileFirst Platform Foundation
Publisher: IBM
Operating System: Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-9518 CVE-2019-9517 CVE-2019-9515
CVE-2019-9514 CVE-2019-9513 CVE-2019-9512
Reference: ASB-2019.0286
ASB-2019.0238
ESB-2020.0467
ESB-2020.0419
Original Bulletin:
https://www.ibm.com/support/pages/node/3285615
- --------------------------BEGIN INCLUDED TEXT--------------------
WebSphere Liberty susceptible to HTTP2 implementation vulnerablility.
Security Bulletin
Document number: 3285615
Modified date: 22 February 2020
Summary
IBM Worklight/MobileFoundation has addressed the following vulnerability.
WebSphere Liberty susceptible to HTTP2 implementation vulnerablility.
Vulnerability Details
CVEID: CVE-2019-9515
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
a Settings Flood attack. By sending a stream of SETTINGS frames to the peer, a
remote attacker could consume excessive CPU resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
165181 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-9518
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
a Empty Frame Flooding attack. By sending a stream of frames with an empty
payload and without the end-of-stream flag, a remote attacker could consume
excessive CPU resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
164904 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-9517
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
an Internal Data Buffering attack. By opening the HTTP/2 window so the peer can
send without constraint and sending a stream of requests for a large response
object, a remote attacker could consume excessive CPU resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
165183 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-9512
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
a Ping Flood attack. By sending continual pings to an HTTP/2 peer, a remote
attacker could consume excessive CPU resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
164903 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-9514
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
a Reset Flood attack. By opening a number of streams and sending an invalid
request over each stream, a remote attacker could consume excessive CPU
resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
164640 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-9513
DESCRIPTION: Multiple vendors are vulnerable to a denial of service, caused by
a Resource Loop attack. By creating multiple request streams and continually
shuffling the priority of the streams, a remote attacker could consume
excessive CPU resources.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
164639 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
+---------------------------------+-------------------------------------------+
|Affected Product(s) |Version(s) |
+---------------------------------+-------------------------------------------+
|IBM MobileFirst Platform |7.1.0.0 - using the scripts (BYOL) |
|Foundation | |
+---------------------------------+-------------------------------------------+
|IBM MobileFirst Foundation |8.0.0.0 - ICP, IKS or using the scripts |
| |(BYOL) |
+---------------------------------+-------------------------------------------+
Remediation/Fixes
+----------------------+-------+----------------------------------------------+
|Product |VRMF |Remediation/First Fix |
+----------------------+-------+----------------------------------------------+
|IBM MobileFirst |7.1.0.0|Download the iFix from IBM MobileFirst |
|Platform Foundation | |Platform Foundation on FixCentral |
+----------------------+-------+----------------------------------------------+
|IBM MobileFirst |8.0.0.0|Download the iFix from IBM MobileFirst |
|Platform Foundation | |Platform Foundation on FixCentral |
+----------------------+-------+----------------------------------------------+
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
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