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AUSCERT Security Bulletin
ASB-2018.0077
Security Advisory: Oracle Database Server
18 April 2018
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AusCERT Security Bulletin Summary
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Product: Oracle Database Server
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-2841 CVE-2018-2832
Member content until: Friday, May 18 2018
OVERVIEW
Multiple vulnerabilities have been identified in Oracle Database
Server, versions 11.2.0.4, 12.1.0.2, 12.2.0.1, 18.1.0.0 [1]
IMPACT
The vendor has provided the following information regarding
the vulnerabilities:
"This Critical Patch Update contains 1 new security fix for
the Oracle Database Server. This vulnerability is not remotely
exploitable without authentication, i.e., may not be exploited
over a network without requiring user credentials. This fix is not
applicable to client-only installations, i.e., installations that do
not have the Oracle Database Server installed." [1]
"CVE-2018-2841
8.5
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Difficult to exploit vulnerability allows low privileged
attacker having Create Session, Create Procedure privilege
with network access via multiple protocols to compromise
Java VM. While the vulnerability is in Java VM, attacks may
significantly impact additional products. Successful
attacks of this vulnerability can result in takeover of Java
VM.
"This Critical Patch Update contains 1 new security fix for
Oracle GoldenGate. This vulnerability is remotely
exploitable without authentication, i.e., may be exploited
over a network without requiring user credentials." [1]
"CVE-2018-2832
8.6
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Easily exploitable vulnerability allows unauthenticated
attacker with network access via HTTP to compromise Oracle
GoldenGate. While the vulnerability is in Oracle
GoldenGate, attacks may significantly impact additional
products. Successful attacks of this vulnerability can
result in unauthorized access to critical data or complete
access to all Oracle GoldenGate accessible data." [2]
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 - April 2018
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
[2] Text Form of Oracle Critical Patch Update - April 2018 Risk
Matrices
http://www.oracle.com/technetwork/security-advisory/cpuapr2018verbose-3678108.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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