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AUSCERT Security Bulletin
ASB-2021.0065
Oracle Virtualization Critical Patch Update
21 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Oracle Secure Global Desktop
Oracle VM VirtualBox
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Root Compromise -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Existing Account
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3450 CVE-2021-2312 CVE-2021-2310
CVE-2021-2309 CVE-2021-2306 CVE-2021-2297
CVE-2021-2296 CVE-2021-2291 CVE-2021-2287
CVE-2021-2286 CVE-2021-2285 CVE-2021-2284
CVE-2021-2283 CVE-2021-2282 CVE-2021-2281
CVE-2021-2280 CVE-2021-2279 CVE-2021-2266
CVE-2021-2264 CVE-2021-2250 CVE-2021-2248
CVE-2021-2221 CVE-2021-2177 CVE-2021-2145
Reference: ESB-2021.1276
ESB-2021.1178
ESB-2021.1056
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle Secure Global Desktop, version 5.6
o Oracle VM VirtualBox, versions prior to 6.1.20
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 24 new security patches for
Oracle Virtualization. 5 of these vulnerabilities may be remotely
exploitable without authentication, i.e., may be exploited over a
network without requiring user credentials." [1]
CVE-2021-2221
9.6 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
The supported version that is affected is 5.6. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
TLS to compromise Oracle Secure Global Desktop. Successful attacks
require human interaction from a person other than the attacker and
while the vulnerability is in Oracle Secure Global Desktop, attacks
may significantly impact additional products. Successful attacks of
this vulnerability can result in takeover of Oracle Secure Global
Desktop.
Affects:
o Oracle Secure Global Desktop 5.6
CVE-2021-2264
8.4 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows low privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
creation, deletion or modification access to critical data or all
Oracle VM VirtualBox accessible data as well as unauthorized access
to critical data or complete access to all Oracle VM VirtualBox
accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2250
8.2 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in takeover of
Oracle VM VirtualBox.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2279
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 6.1.20. Difficult
to exploit vulnerability allows unauthenticated attacker with network
access via RDP to compromise Oracle VM VirtualBox. Successful attacks
of this vulnerability can result in takeover of Oracle VM VirtualBox.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2309
7.5 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in takeover of
Oracle VM VirtualBox.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2145
7.5 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in takeover of
Oracle VM VirtualBox.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2310
7.5 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in takeover of
Oracle VM VirtualBox.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-3450
7.4 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
The supported version that is affected is 5.6. Difficult to exploit
vulnerability allows unauthenticated attacker with network access via
HTTPS to compromise Oracle Secure Global Desktop. Successful attacks
of this vulnerability can result in unauthorized creation, deletion
or modification access to critical data or all Oracle Secure Global
Desktop accessible data as well as unauthorized access to critical
data or complete access to all Oracle Secure Global Desktop
accessible data.
Affects:
o Oracle Secure Global Desktop 5.6
CVE-2021-2280
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2281
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
creation, deletion or modification access to critical data or all
Oracle VM VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2282
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2283
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2284
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
creation, deletion or modification access to critical data or all
Oracle VM VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2285
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2286
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
creation, deletion or modification access to critical data or all
Oracle VM VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2287
7.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows unauthenticated attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2306
6.0 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2266
6.0 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2296
5.3 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2297
5.3 AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. While the vulnerability is in Oracle
VM VirtualBox, attacks may significantly impact additional products.
Successful attacks of this vulnerability can result in unauthorized
access to critical data or complete access to all Oracle VM
VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2291
4.7 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
The supported version that is affected is Prior to 6.1.20. Difficult
to exploit vulnerability allows low privileged attacker with logon to
the infrastructure where Oracle VM VirtualBox executes to compromise
Oracle VM VirtualBox. Successful attacks of this vulnerability can
result in unauthorized access to critical data or complete access to
all Oracle VM VirtualBox accessible data.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2312
4.4 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
The supported version that is affected is Prior to 6.1.20. Easily
exploitable vulnerability allows high privileged attacker with logon
to the infrastructure where Oracle VM VirtualBox executes to
compromise Oracle VM VirtualBox. Successful attacks of this
vulnerability can result in unauthorized ability to cause a hang or
frequently repeatable crash (complete DOS) of Oracle VM VirtualBox.
Note : This vulnerability applies to Windows systems only.
Affects:
o Oracle VM VirtualBox Prior to 6.1.20
CVE-2021-2177
10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is 5.6. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
HTTP to compromise Oracle Secure Global Desktop. While the
vulnerability is in Oracle Secure Global Desktop, attacks may
significantly impact additional products. Successful attacks of this
vulnerability can result in takeover of Oracle Secure Global Desktop.
Affects:
o Oracle Secure Global Desktop 5.6
CVE-2021-2248
10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The supported version that is affected is 5.6. Easily exploitable
vulnerability allows unauthenticated attacker with network access via
SKID to compromise Oracle Secure Global Desktop. While the
vulnerability is in Oracle Secure Global Desktop, attacks may
significantly impact additional products. Successful attacks of this
vulnerability can result in takeover of Oracle Secure Global Desktop.
Affects:
o Oracle Secure Global Desktop 5.6
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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