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AUSCERT Security Bulletin
ASB-2019.0018
Multiple vulnerabilities have been identified in Oracle Java SE
16 January 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Java Advanced Management Console
Oracle Java SE
Oracle Java SE Embedded
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Modify Arbitrary Files -- Remote with User Interaction
Delete Arbitrary Files -- Remote with User Interaction
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-2540 CVE-2019-2449 CVE-2019-2426
CVE-2019-2422 CVE-2018-11212
Member content until: Friday, February 15 2019
OVERVIEW
Multiple vulnerabilities have been identified in :
o Java Advanced Management Console, version 2.12
o Oracle Java SE, versions 7u201, 8u192, 11.0.1
o Oracle Java SE Embedded, version 8u191
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 5 new security fixes for Oracle
Java SE. All of these vulnerabilities may be remotely exploitable
without authentication, i.e., may be exploited over a network
without requiring user credentials." [1]
"CVE-2019-2540
6.1
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
The supported version that is affected is Java Advanced Management
Console: 2.12. Easily exploitable vulnerability allows
unauthenticated attacker with network access via multiple protocols
to compromise Java Advanced Management Console. Successful attacks
require human interaction from a person other than the attacker and
while the vulnerability is in Java Advanced Management Console,
attacks may significantly impact additional products. Successful
attacks of this vulnerability can result in unauthorized update,
insert or delete access to some of Java Advanced Management Console
accessible data as well as unauthorized read access to a subset of
Java Advanced Management Console accessible data.
CVE-2018-11212
5.3
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Supported versions that are affected are Java SE: 7u201, 8u192 and
11.0.1; Java SE Embedded: 8u191. Easily exploitable vulnerability
allows unauthenticated attacker with network access via multiple
protocols to compromise Java SE. Successful attacks of this
vulnerability can result in unauthorized ability to cause a partial
denial of service (partial DOS) of Java SE.
CVE-2019-2426
3.7
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Supported versions that are affected are Java SE: 7u201, 8u192 and
11.0.1; Java SE Embedded: 8u191. Difficult to exploit vulnerability
allows unauthenticated attacker with network access via multiple
protocols to compromise Java SE. Successful attacks of this
vulnerability can result in unauthorized read access to a subset of
Java SE accessible data.
CVE-2019-2449
3.1
AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
The supported version that is affected is Java SE: 8u192. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via multiple protocols to compromise Java SE. Successful
attacks require human interaction from a person other than the
attacker. Successful attacks of this vulnerability can result in
unauthorized ability to cause a partial denial of service (partial
DOS) of Java SE.
CVE-2019-2422
3.1
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Supported versions that are affected are Java SE: 7u201, 8u192 and
11.0.1; Java SE Embedded: 8u191. Difficult to exploit vulnerability
allows unauthenticated attacker with network access via multiple
protocols to compromise Java SE. Successful attacks require human
interaction from a person other than the attacker. Successful attacks
of this vulnerability can result in unauthorized read access to a
subset of Java SE 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 - January 2019
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
[2] Text Form of Oracle Critical Patch Update - January 2019 Risk
Matrices
https://www.oracle.com/technetwork/security-advisory/cpujan2019verbose-5072807.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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