Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.4143
FortiOS vulnerabilities
8 December 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: FortiOS
Publisher: Fortiguard Labs
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-26109 CVE-2021-26108
Original Bulletin:
https://www.fortiguard.com/psirt/FG-IR-21-051
https://www.fortiguard.com/psirt/FG-IR-21-049
Comment: This bulletin contains two (2) Fortiguard security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
FortiOS - Hardcoded SSLVPN cookie encryption key
IR Number : FG-IR-21-051
Date : Dec 7, 2021
Risk : 4/5
CVSSv3 Score : 7.3
Impact : Information disclosure
CVE ID : CVE-2021-26108
Affected Products: FortiOS: 7.0.0, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4,
6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2,
6.0.12, 6.0.11, 6.0.10, 6.0.1, 6.0.0, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 5.6.5, 5.6.4, 5.6.3,
5.6.2, 5.6.13, 5.6.12, 5.6.11, 5.6.10, 5.6.1, 5.6.0
Summary
A use of hard-coded cryptographic key vulnerability [CWE 321] in FortiOS SSLVPN
may allow an attacker to retrieve the key by reverse engineering.
Affected Products
FortiOS 6.4.5 and below.
FortiOS 6.2.8 and below.
FortiOS 6.0.12 and below.
FortiOS 5.6.13 and below.
Solutions
Upgrade to FortiOS 7.0.0 or above.
Upgrade to FortiOS 6.4.6 or above.
Upgrade to FortiOS 6.2.10 or above.
Upgrade to FortiOS 6.0.13 or above.
Upgrade to FortiOS 5.6.14 or above.
For new high-end F-Series Models (FG-1800F, FG-3800F, FG-4200F, FG-4400F)
please upgrade to 6.2.9
- --------------------------------------------------------------------------------
FortiOS - Integer overflow in SSLVPN allocator
IR Number : FG-IR-21-049
Date : Dec 7, 2021
Risk : 4/5
CVSSv3 Score : 7.7
Impact : Execute unauthorized code or commands
CVE ID : CVE-2021-26109
Affected Products: FortiOS: 7.0.0, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3,
6.2.2, 6.2.1, 6.2.0, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.12, 6.0.11, 6.0.10, 6.0.1, 6.0.0
Summary
An integer overflow or wraparound vulnerability [CWE-190] in FortiOS SSLVPN
memory allocator may allow an unauthenticated attacker to corrupt control data
on the heap via specifically crafted requests to SSLVPN, resulting in
potentially arbitrary code execution.
Affected Products
FortiOS version 7.0.0 and below.
FortiOS version 6.4.5 and below.
FortiOS version 6.2.9 and below.
FortiOS version 6.0.12 and below.
Solutions
Upgrade to FortiOS 7.0.1.
Upgrade to FortiOS 6.4.6.
Upgrade to FortiOS 6.2.10.
Upgrade to FortiOS 6.0.13.
For new high-end F-Series Models (FG-1800F, FG-3800F, FG-4200F, FG-4400F)
please upgrade to 6.2.9
Acknowledgement
Internally discovered and reported by Giuseppe Cocomazzi of Fortinet Product
Security team.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. 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.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=zWu9
-----END PGP SIGNATURE-----