ESB-2021.1631 – [Ubuntu] Flatpak: Multiple vulnerabilities

—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA256

===========================================================================
AUSCERT External Security Bulletin Redistribution

ESB-2021.1631
USN-4951-1: Flatpak vulnerability
13 May 2021

===========================================================================

AusCERT Security Bulletin Summary
———————————

Product: Flatpak
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Confidential Data — Existing Account
Reduced Security — Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-21381

Reference: ESB-2021.1149
ESB-2021.1079
ESB-2021.0892

Original Bulletin:
https://ubuntu.com/security/notices/USN-4951-1

– ————————–BEGIN INCLUDED TEXT——————–

USN-4951-1: Flatpak vulnerability
12 May 2021

A Flatpak application could access files that it would not normally
be permitted to access.
Releases

o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS

Packages

o flatpak – Application deployment framework for desktop apps

Details

Anton Lydike discovered that Flatpak did not properly handle special tokens
in desktop files. An attacker could use this to specially craft a Flatpak
application that could escape sandbox confinement.

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 20.10

o flatpak – 1.8.2-1ubuntu0.2
o libflatpak0 – 1.8.2-1ubuntu0.2

Ubuntu 20.04

o flatpak – 1.6.5-0ubuntu0.3
o libflatpak0 – 1.6.5-0ubuntu0.3

Ubuntu 18.04

o flatpak – 1.0.9-0ubuntu0.3
o libflatpak0 – 1.0.9-0ubuntu0.3

In general, a standard system update will make all the necessary changes.

References

o CVE-2021-21381

– ————————–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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=GnnB
—–END PGP SIGNATURE—–

Read More

The post ESB-2021.1631 – [Ubuntu] Flatpak: Multiple vulnerabilities appeared first on Malware Devil.

https://malwaredevil.com/2021/05/13/esb-2021-1631-ubuntu-flatpak-multiple-vulnerabilities/?utm_source=rss&utm_medium=rss&utm_campaign=esb-2021-1631-ubuntu-flatpak-multiple-vulnerabilities