Protect yourself against future threats.
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AUSCERT Security Bulletin
ASB-2024.0087
Oracle Database Server Critical Patch Update
17 April 2024
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AusCERT Security Bulletin Summary
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Product: Oracle Database Server
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2023-48795 CVE-2024-21093 CVE-2024-21058
CVE-2024-21066 CVE-2024-20995 CVE-2023-5072
CVE-2023-36632
Comment: CVSS (Max): 5.9 CVE-2023-48795 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVSS Source: Oracle
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle Database Server, versions 19.3-19.22, 21.3-21.13
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 12 new security patches for
Oracle Database Products divided as follows:" [1]
"CVE-2023-48795
5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Supported versions that are affected are 21.3-21.13. Difficult to
exploit vulnerability allows unauthenticated attacker with network
access via SSH to compromise the affected system. 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 Grid Infrastructure (Apache Mina SSHD) 21.3-21.13
o Oracle SQLcl (Apache Mina SSHD) 19.3-19.22, 21.3-21.13
CVE-2024-21093
5.3 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Supported versions that are affected are 19.3-19.22 and 21.3-21.13.
Difficult to exploit vulnerability allows low privileged attacker
having Create Session, Create Procedure privilege with network
access
via Oracle Net to compromise the affected system. Successful
attacks
of this vulnerability can result in unauthorized access to critical
data or complete access to all the affected system's accessible
data.
Affects:
o Java VM 19.3-19.22, 21.3-21.13
CVE-2024-21058
4.9 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Supported versions that are affected are 19.3-19.22 and 21.3-21.13.
Easily exploitable vulnerability allows high privileged attacker
having SYSDBA privilege with network access via Oracle Net to
compromise the affected system. 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 Unified Audit 19.3-19.22, 21.3-21.13
CVE-2023-5072
4.3 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Supported versions that are affected are 21.3-21.13. Easily
exploitable vulnerability allows unauthenticated attacker with
network access via multiple protocols 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 ability to cause a partial denial of service
(partial DOS) of the affected system.
Affects:
o GraalVM Multilingual Engine 21.3-21.13
CVE-2024-21066
4.2 AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
Supported versions that are affected are 19.3-19.22 and 21.3-21.13.
Easily exploitable vulnerability allows high privileged attacker
having Authenticated User privilege with logon to the
infrastructure
where the affected system executes 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 access to critical data or complete access to all the
affected system's accessible data.
Affects:
o RDBMS 19.3-19.22, 21.3-21.13
CVE-2023-36632
3.5 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Supported versions that are affected are 21.3-21.13. Easily
exploitable vulnerability allows low privileged attacker having
Authenticated User privilege with network access via Oracle Net 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 ability to cause a
partial denial of service (partial DOS) of the affected system.
Affects:
o RDBMS (Python) 21.3-21.13
CVE-2024-20995
2.4 AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L
Supported versions that are affected are 19.3-19.22 and 21.3-21.13.
Easily exploitable vulnerability allows high privileged attacker
having DBA privilege with network access via Oracle Net 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 ability to cause a partial
denial of service (partial DOS) of the affected system.
Affects:
o Oracle Database Sharding 19.3-19.22, 21.3-21.13" [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 2024
https://www.oracle.com/security-alerts/cpuapr2024.html
[2] Text Form of Oracle Critical Patch Update - April 2024 Risk
Matrices
https://www.oracle.com/security-alerts/cpuapr2024verbose.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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