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AUSCERT Security Bulletin
ASB-2022.0109
Oracle Blockchain Platform Critical Patch Update
21 April 2022
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AusCERT Security Bulletin Summary
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Product: Oracle Blockchain Platform
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29425 CVE-2021-23017 CVE-2021-2351
CVE-2020-28052 CVE-2020-27218 CVE-2020-24750
CVE-2020-17527 CVE-2020-11612 CVE-2020-11022
CVE-2020-8203 CVE-2020-8174 CVE-2020-5245
CVE-2019-13565 CVE-2019-12399 CVE-2019-10086
Comment: CVSS (Max): 9.8 CVE-2021-23017 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: Oracle
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle Blockchain Platform, versions prior to 21.1.2
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 15 new security patches for
Oracle Blockchain Platform. 14 of these vulnerabilities may be
remotely exploitable without authentication, i.e., may be exploited
over a network without requiring user credentials." [1]
CVE-2021-23017
9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via UDP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in takeover of
Oracle Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-5245
8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows low privileged attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in takeover of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2021-2351
8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
The supported version that is affected is 21.1.2. Difficult to
exploit vulnerability allows unauthenticated attacker with network
access via Oracle Net to compromise Oracle Blockchain Platform.
Successful attacks require human interaction from a person other than
the attacker and while the vulnerability is in Oracle Blockchain
Platform, attacks may significantly impact additional products (scope
change). Successful attacks of this vulnerability can result in
takeover of Oracle Blockchain Platform.
Note : This is a hotfix on top of version 21.1.2.
Affects:
o Oracle Blockchain Platform 21.1.2
CVE-2020-8174
8.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in takeover of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-24750
8.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in takeover of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-28052
8.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTPS to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in takeover of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2019-12399
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle Blockchain
Platform accessible data.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-17527
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle Blockchain
Platform accessible data.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-11612
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in unauthorized
ability to cause a hang or frequently repeatable crash (complete DOS)
of Oracle Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2019-13565
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via LDAP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle Blockchain
Platform accessible data.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-8203
7.4 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in unauthorized creation,
deletion or modification access to critical data or all Oracle
Blockchain Platform accessible data and unauthorized ability to cause
a hang or frequently repeatable crash (complete DOS) of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2019-10086
7.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
The supported version that is affected is Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Oracle Blockchain Platform.
Successful attacks of this vulnerability can result in unauthorized
update, insert or delete access to some of Oracle Blockchain Platform
accessible data as well as unauthorized read access to a subset of
Oracle Blockchain Platform accessible data and unauthorized ability
to cause a partial denial of service (partial DOS) of Oracle
Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-11022
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 Prior to 21.1.2. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via HTTP to compromise Oracle Blockchain Platform.
Successful attacks require human interaction from a person other than
the attacker and while the vulnerability is in Oracle Blockchain
Platform, attacks may significantly impact additional products (scope
change). Successful attacks of this vulnerability can result in
unauthorized update, insert or delete access to some of Oracle
Blockchain Platform accessible data as well as unauthorized read
access to a subset of Oracle Blockchain Platform accessible data.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2021-29425
4.8 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in unauthorized update,
insert or delete access to some of Oracle Blockchain Platform
accessible data as well as unauthorized read access to a subset of
Oracle Blockchain Platform accessible data.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
CVE-2020-27218
4.8 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
The supported version that is affected is Prior to 21.1.2. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via HTTP to compromise Oracle Blockchain Platform. Successful
attacks of this vulnerability can result in unauthorized update,
insert or delete access to some of Oracle Blockchain Platform
accessible data and unauthorized ability to cause a partial denial of
service (partial DOS) of Oracle Blockchain Platform.
Affects:
o Oracle Blockchain Platform Prior to 21.1.2
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 2022
https://www.oracle.com/security-alerts/cpuapr2022.html
[2] Text Form of Oracle Critical Patch Update - April 2022 Risk
Matrices
https://www.oracle.com/security-alerts/cpuapr2022verbose.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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