Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.3925
guacamole-server security update
9 November 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: guacamole-server
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-9498 CVE-2020-9497
Reference: ESB-2020.2289
ESB-2020.2288
Original Bulletin:
https://www.debian.org/lts/security/2020/dla-2435
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
- - -------------------------------------------------------------------------
Debian LTS Advisory DLA-2435-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Markus Koschany
November 06, 2020 https://wiki.debian.org/LTS
- - -------------------------------------------------------------------------
Package : guacamole-server
Version : 0.9.9-2+deb9u1
CVE ID : CVE-2020-9497 CVE-2020-9498
Debian Bug : 964195
The server component of Apache Guacamole, a remote desktop gateway,
did not properly validate data received from RDP servers. This could
result
in information disclosure or even the execution of arbitrary code.
CVE-2020-9497
Apache Guacamole does not properly validate data received from RDP
servers via static virtual channels. If a user connects to a
malicious or compromised RDP server, specially-crafted PDUs could
result in disclosure of information within the memory of the guacd
process handling the connection.
CVE-2020-9498
Apache Guacamole may mishandle pointers involved in processing data
received via RDP static virtual channels. If a user connects to a
malicious or compromised RDP server, a series of specially-crafted
PDUs could result in memory corruption, possibly allowing arbitrary
code to be executed with the privileges of the running guacd
process.
For Debian 9 stretch, these problems have been fixed in version
0.9.9-2+deb9u1.
We recommend that you upgrade your guacamole-server packages.
For the detailed security status of guacamole-server please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/guacamole-server
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
- -----BEGIN PGP SIGNATURE-----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=q+56
- -----END PGP SIGNATURE-----
- --------------------------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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=5Ywe
-----END PGP SIGNATURE-----