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AUSCERT Security Bulletin
ASB-2019.0124
Multiple vulnerabilities have been identified in Oracle Solaris
18 April 2019
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AusCERT Security Bulletin Summary
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Product: Oracle Solaris
Operating System: Solaris
Impact/Access: Modify Arbitrary Files -- Remote with User Interaction
Denial of Service -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-2704 CVE-2019-2577 CVE-2018-20685
Member content until: Saturday, May 18 2019
Reference: ESB-2019.0410.3
ESB-2019.0164.2
ESB-2019.0399.2
OVERVIEW
Multiple vulnerabilities have been identified in:
o Oracle Solaris, versions 10, 11 [1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 3 new security fixes for the
Oracle Sun Systems Products Suite. 2 of these vulnerabilities may be
remotely exploitable without authentication, i.e., may be exploited
over a network without requiring user credentials." [1]
"CVE-2019-2704
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Easily exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise the affected system. Successful
attacks of this vulnerability can result in unauthorized read access
to a subset of the affected system's accessible data.
Affects:
o Oracle Solaris 11
CVE-2018-20685
5.3 AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via SSH to compromise the affected system.
Successful attacks require human interaction from a person other than
the attacker. Successful attacks of this vulnerability can result in
unauthorized creation, deletion or modification access to critical
data or all the affected system's accessible data.
Affects:
o Oracle Solaris 10
CVE-2019-2577
3.3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Easily exploitable vulnerability allows low privileged attacker with
logon to the infrastructure where the affected system executes to
compromise the affected system. Successful attacks of this
vulnerability can result in unauthorized ability to cause a partial
denial of service (partial DOS) of the affected system.
Affects:
o Oracle Solaris 11" [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 2019
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
[2] Text Form of Oracle Critical Patch Update - April 2019 Risk
Matrices
https://www.oracle.com/technetwork/security-advisory/cpuapr2019verbose-5072824.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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