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AUSCERT Security Bulletin
ASB-2021.0155
Oracle Food and Beverage Applications Critical Patch Update
21 July 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: MICROS Compact Workstation
MICROS ES400 Series
MICROS Kitchen Display System Hardware
MICROS Workstation
Oracle Hospitality Reporting and Analytics
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3156 CVE-2021-2395
Reference: ASB-2021.0036
ESB-2021.1815
ESB-2021.0588
OVERVIEW
Multiple vulnerabilities have been identified in :
o MICROS Compact Workstation 3, version 310
o MICROS ES400 Series, versions 400-410
o MICROS Kitchen Display System Hardware, version 210
o MICROS Workstation 5A, version 5A
o MICROS Workstation 6, versions 610-655
o Oracle Hospitality Reporting and Analytics, version 9.1.0
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 6 new security patches for
Oracle Food and Beverage Applications. None of these vulnerabilities
may be remotely exploitable without authentication, i.e., none may be
exploited over a network without requiring user credentials." [1]
CVE-2021-2395
8.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
The supported version that is affected is 9.1.0. Easily exploitable
vulnerability allows low privileged attacker with network access via
HTTP to compromise Oracle Hospitality Reporting and Analytics.
Successful attacks of this vulnerability can result in unauthorized
creation, deletion or modification access to critical data or all
Oracle Hospitality Reporting and Analytics accessible data as well as
unauthorized access to critical data or complete access to all Oracle
Hospitality Reporting and Analytics accessible data.
Affects:
o Oracle Hospitality Reporting and Analytics 9.1.0
CVE-2021-3156
7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is 310. Easily exploitable
vulnerability allows low privileged attacker with logon to the
infrastructure where MICROS Compact Workstation 3 executes to
compromise MICROS Compact Workstation 3. Successful attacks of this
vulnerability can result in takeover of MICROS Compact Workstation 3.
Affects:
o MICROS Compact Workstation 3 310
o MICROS ES400 Series 400-410
o MICROS Kitchen Display System Hardware 210
o MICROS Workstation 5A 5A
o MICROS Workstation 6 610-655
MITIGATION
Oracle states:
"Due to the threat posed by a successful attack, Oracle strongly
recommends that customers apply CPU fixes as soon as possible. Until
you apply the CPU fixes, it may be possible to reduce the risk of
successful attack by blocking network protocols required by an
attack. For attacks that require certain privileges or access to
certain packages, removing the privileges or the ability to access
the packages from users that do not need the privileges may help
reduce the risk of successful attack. Both approaches may break
application functionality, so Oracle strongly recommends that
customers test changes on non-production systems. Neither approach
should be considered a long-term solution as neither corrects the
underlying problem." [1]
REFERENCES
[1] Oracle Critical Patch Update Advisory - July 2021
https://www.oracle.com/security-alerts/cpujul2021.html
[2] Text Form of Oracle Critical Patch Update - July 2021 Risk Matrices
https://www.oracle.com/security-alerts/cpujul2021verbose.html
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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