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AUSCERT Security Bulletin
ASB-2023.0089
Oracle iLearning Critical Patch Update
19 April 2023
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AusCERT Security Bulletin Summary
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Product: Oracle iLearning
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2022-23437 CVE-2021-2351 CVE-2020-17521
Comment: CVSS (Max): 8.3 CVE-2021-2351 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
CVSS Source: Oracle
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle iLearning, version 6.3.1
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 3 new security patches for
Oracle iLearning. 2 of these vulnerabilities may be remotely
exploitable without authentication, i.e., may be exploited over a
network without requiring user credentials." [1]
"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 6.3.1. Difficult to exploit
vulnerability allows unauthenticated attacker with network access via
Oracle Net to compromise Oracle iLearning. Successful attacks require
human interaction from a person other than the attacker and while the
vulnerability is in Oracle iLearning, attacks may significantly
impact additional products (scope change). Successful attacks of this
vulnerability can result in takeover of Oracle iLearning.
Affects:
o Oracle iLearning 6.3.1
CVE-2022-23437
6.5 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
The supported version that is affected is 6.3.1. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
HTTP to compromise Oracle iLearning. 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
hang or frequently repeatable crash (complete DOS) of Oracle
iLearning.
Affects:
o Oracle iLearning 6.3.1
CVE-2020-17521
5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
The supported version that is affected is 6.3.1. Easily exploitable
vulnerability allows low privileged attacker with logon to the
infrastructure where Oracle iLearning executes to compromise Oracle
iLearning. Successful attacks of this vulnerability can result in
unauthorized access to critical data or complete access to all Oracle
iLearning accessible data.
Affects:
o Oracle iLearning 6.3.1" [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 2023
https://www.oracle.com/security-alerts/cpuapr2023.html
[2] Text Form of Oracle Critical Patch Update - April 2023 Risk
Matrices
https://www.oracle.com/security-alerts/cpuapr2023verbose.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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