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AUSCERT Security Bulletin
ASB-2021.0091
Oracle Construction and Engineering Products Crticial Patch Update
21 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Instantis EnterpriseTrack
Primavera Gateway
Primavera Unifier
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Read-only Data Access -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-17527 CVE-2020-17521 CVE-2020-13956
CVE-2020-11987 CVE-2020-11022 CVE-2019-0219
CVE-2016-5725
OVERVIEW
Multiple vulnerabilities have been identified in :
o Instantis EnterpriseTrack, versions 17.1, 17.2, 17.3
o Primavera Gateway, versions 17.12.0-17.12.10
o Primavera Unifier, versions 16.1, 16.2, 17.7-17.12, 18.8,
19.12, 20.12
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 8 new security patches for
Oracle Construction and Engineering. 6 of these vulnerabilities may
be remotely exploitable without authentication, i.e., may be
exploited over a network without requiring user credentials." [1]
CVE-2019-0219
9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Supported versions that are affected are 17.1, 17.2 and 17.3. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Instantis EnterpriseTrack.
Successful attacks of this vulnerability can result in takeover of
Instantis EnterpriseTrack.
Affects:
o Instantis EnterpriseTrack 17.1, 17.2, 17.3
CVE-2020-17527
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Supported versions that are affected are 17.1, 17.2 and 17.3. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Instantis EnterpriseTrack.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Instantis
EnterpriseTrack accessible data.
Affects:
o Instantis EnterpriseTrack 17.1, 17.2, 17.3
CVE-2020-11022
6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Supported versions that are affected are 16.1, 16.2, 17.7-17.12,
18.8, 19.12 and 20.12. Easily exploitable vulnerability allows
unauthenticated attacker with network access via HTTP to compromise
Primavera Unifier. Successful attacks require human interaction from
a person other than the attacker and while the vulnerability is in
Primavera Unifier, attacks may significantly impact additional
products. Successful attacks of this vulnerability can result in
unauthorized update, insert or delete access to some of Primavera
Unifier accessible data as well as unauthorized read access to a
subset of Primavera Unifier accessible data.
Affects:
o Primavera Unifier 16.1, 16.2, 17.7-17.12, 18.8, 19.12, 20.12
CVE-2016-5725
5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Supported versions that are affected are 17.12.0-17.12.10. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Primavera Gateway. Successful attacks
of this vulnerability can result in unauthorized creation, deletion
or modification access to critical data or all Primavera Gateway
accessible data.
Affects:
o Primavera Gateway 17.12.0-17.12.10
CVE-2020-17521
5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Supported versions that are affected are 17.12.0-17.12.10. Easily
exploitable vulnerability allows low privileged attacker with logon
to the infrastructure where Primavera Gateway executes to compromise
Primavera Gateway. Successful attacks of this vulnerability can
result in unauthorized access to critical data or complete access to
all Primavera Gateway accessible data.
Affects:
o Primavera Gateway 17.12.0-17.12.10
o Primavera Unifier 16.1, 16.2, 17.7-17.12, 18.8, 19.12, 20.12
CVE-2020-11987
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Supported versions that are affected are 17.1, 17.2 and 17.3. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Instantis EnterpriseTrack.
Successful attacks of this vulnerability can result in unauthorized
update, insert or delete access to some of Instantis EnterpriseTrack
accessible data.
Affects:
o Instantis EnterpriseTrack 17.1, 17.2, 17.3
CVE-2020-13956
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Supported versions that are affected are 16.1, 16.2, 17.7-17.12,
18.8, 19.12 and 20.12. Easily exploitable vulnerability allows
unauthenticated attacker with network access via HTTP to compromise
Primavera Unifier. Successful attacks of this vulnerability can
result in unauthorized update, insert or delete access to some of
Primavera Unifier accessible data.
Affects:
o Primavera Unifier 16.1, 16.2, 17.7-17.12, 18.8, 19.12, 20.12
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 2021
https://www.oracle.com/security-alerts/cpuapr2021.html
[2] Text Form of Oracle Critical Patch Update - April 2021 Risk
Matrices
https://www.oracle.com/security-alerts/cpuapr2021verbose.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.
===========================================================================
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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