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AUSCERT External Security Bulletin Redistribution
ESB-2021.2186
tor security update
21 June 2021
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AusCERT Security Bulletin Summary
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Product: tor
Publisher: Debian
Operating System: Debian GNU/Linux
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Denial of Service — Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-34550 CVE-2021-34549 CVE-2021-34548
Original Bulletin:
http://www.debian.org/security/2021/dsa-4932
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running tor check for an updated version of the software for their
operating system.
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Debian Security Advisory DSA-4932-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
June 18, 2021 https://www.debian.org/security/faq
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Package : tor
CVE ID : CVE-2021-34548 CVE-2021-34549 CVE-2021-34550
Debian Bug : 990000
Multiple security vulnerabilities were discovered in Tor, a
connection-based low-latency anonymous communication system, which
could result in denial of service or spoofing.
For the stable distribution (buster), these problems have been fixed in
version 0.3.5.15-1.
We recommend that you upgrade your tor packages.
For the detailed security status of tor please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/tor
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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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.
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