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AUSCERT Security Bulletin
ASB-2022.0206
Oracle Database Server Critical Patch Update
19 October 2022
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AusCERT Security Bulletin Summary
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Product: Oracle Application Express
Oracle Database Server
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Resolution: Patch/Upgrade
CVE Names: CVE-2022-39419 CVE-2022-21606 CVE-2022-21603
CVE-2022-21596 CVE-2022-1587 CVE-2021-41495
CVE-2020-36518
Comment: CVSS (Max): 9.1* CVE-2022-1587 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
CVSS Source: [Oracle], NVD
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
* Not all CVSS available when published
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle Application Express
o Oracle Database Server, versions 19c, 21c
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 14 new security patches for
Oracle Database Products divided as follows:" [1]
"CVE-2022-21596
7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
The supported version that is affected is 19c. Easily exploitable
vulnerability allows high privileged attacker having DBA user
privilege with network access via Oracle Net to compromise the
affected system. Successful attacks of this vulnerability can result
in takeover of the affected system.
Affects:
o Oracle Database - Advanced Queuing 19c
CVE-2022-21603
7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Supported versions that are affected are 19c and 21c. Easily
exploitable vulnerability allows high privileged attacker having
Local Logon privilege with network access via Local Logon to
compromise the affected system. Successful attacks of this
vulnerability can result in takeover of the affected system.
Affects:
o Oracle Database - Sharding 19c, 21c
CVE-2020-36518
6.5 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Supported versions that are affected are 19c and 21c. Easily
exploitable vulnerability allows low privileged attacker having REST
User privilege with network access via HTTP to compromise the
affected system. Successful attacks of this vulnerability can result
in unauthorized ability to cause a hang or frequently repeatable
crash (complete DOS) of the affected system.
Affects:
o Oracle Database - Fleet Patching (jackson-databind) 19c, 21c
o Spatial and Graph (jackson-databind) 19c, 21c
CVE-2022-1587
6.5 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Supported versions that are affected are 19c and 21c. Easily
exploitable vulnerability allows low privileged attacker having
Subscriber privilege with network access via HTTP to compromise the
affected system. Successful attacks of this vulnerability can result
in unauthorized ability to cause a hang or frequently repeatable
crash (complete DOS) of the affected system. Note : This
vulnerability applies to Windows systems only.
Affects:
o Oracle Notification Server (PCRE2) 19c, 21c
CVE-2022-21606
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 19c. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
HTTP to compromise the affected system. Successful attacks require
human interaction from a person other than the attacker and while the
vulnerability is in the affected system, 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 the affected system's accessible data as well as
unauthorized read access to a subset of the affected system's
accessible data. Note : This vulnerability applies to Windows
systems only.
Affects:
o Oracle Services for Microsoft Transaction Server 19c
CVE-2022-39419
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Supported versions that are affected are 19c and 21c. Easily
exploitable vulnerability allows low privileged attacker having
Create Procedure privilege with network access via Oracle Net 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 Java VM 19c, 21c
CVE-2021-41495
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
The supported version that is affected is 21c. Easily exploitable
vulnerability allows low privileged attacker having Create Session
privilege with network access via Oracle Net 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 Database - Machine Learning (Numpy) 21c" [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 - October 2022
https://www.oracle.com/security-alerts/cpuoct2022.html
[2] Text Form of Oracle Critical Patch Update - October 2022 Risk
Matrices
https://www.oracle.com/security-alerts/cpuoct2022verbose.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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