Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.0242
USN-4701-1: Thunderbird vulnerabilities
21 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Thunderbird
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Unauthorised Access -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-35113 CVE-2020-35111 CVE-2020-26978
CVE-2020-26974 CVE-2020-26973 CVE-2020-26971
CVE-2020-26970 CVE-2020-16044 CVE-2020-16042
Reference: ESB-2021.0100
ESB-2021.0011
ESB-2020.4524
ESB-2020.4515
ESB-2020.4458
Original Bulletin:
https://ubuntu.com/security/notices/USN-4701-1
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4701-1: Thunderbird vulnerabilities
20 January 2021
Several security issues were fixed in Thunderbird.
Releases
o Ubuntu 20.10
Packages
o thunderbird - Mozilla Open Source mail and newsgroup client
Details
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass the CSS sanitizer, or execute
arbitrary code. ( CVE-2020-16042 , CVE-2020-16044 , CVE-2020-26971 ,
CVE-2020-26973 , CVE-2020-26974 , CVE-2020-26978 , CVE-2020-35113 )
It was discovered that the proxy.onRequest API did not catch
view-source URLs. If a user were tricked in to installing an
extension with the proxy permission and opening View Source, an
attacker could potentially exploit this to obtain sensitive
information. ( CVE-2020-35111 )
A stack overflow was discovered due to incorrect parsing of SMTP server
response codes. An attacker could potentially exploit this to execute
arbitrary code. ( CVE-2020-26970 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.10
o thunderbird - 1:78.6.1+build1-0ubuntu0.20.10.1
After a standard system update you need to restart Thunderbird to make
all the necessary changes.
References
o CVE-2020-16042
o CVE-2020-26974
o CVE-2020-26973
o CVE-2020-35113
o CVE-2020-26970
o CVE-2020-16044
o CVE-2020-26971
o CVE-2020-35111
o CVE-2020-26978
Related notices
o USN-4687-1 : firefox
o USN-4671-1 : firefox
- --------------------------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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=nS9f
-----END PGP SIGNATURE-----