Ubuntu Security Notice 4649-2 - USN-4649-1 fixed vulnerabilities in xdg-utils. That update caused a regression by removing the --attach functionality in thunderbird and others applications. This update fix the problem by reverting these changes. Jens Mueller discovered that xdg-utils incorrectly handled certain URI. An attacker could possibly use this issue to expose sensitive information. Various other issues were also addressed.
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Ubuntu Security Notice USN-4649-2
January 12, 2021
xdg-utils regression
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
USN-4649-1 introduced a regression in xdg-utils.
Software Description:
- xdg-utils: desktop integration utilities from freedesktop.org
Details:
USN-4649-1 fixed vulnerabilities in xdg-utils. That update caused a regression
by removing the --attach functionality in thunderbird and others applications.
This update fix the problem by reverting these changes.
Original advisory details:
Jens Mueller discovered that xdg-utils incorrectly handled certain URI.
An attacker could possibly use this issue to expose sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
xdg-utils 1.1.3-2ubuntu1.20.10.2
Ubuntu 20.04 LTS:
xdg-utils 1.1.3-2ubuntu1.20.04.2
Ubuntu 18.04 LTS:
xdg-utils 1.1.2-1ubuntu2.5
Ubuntu 16.04 LTS:
xdg-utils 1.1.1-1ubuntu1.16.04.5
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4649-2
https://usn.ubuntu.com/4649-1
https://launchpad.net/bugs/1909941
Package Information:
https://launchpad.net/ubuntu/+source/xdg-utils/1.1.3-2ubuntu1.20.10.2
https://launchpad.net/ubuntu/+source/xdg-utils/1.1.3-2ubuntu1.20.04.2
https://launchpad.net/ubuntu/+source/xdg-utils/1.1.2-1ubuntu2.5
https://launchpad.net/ubuntu/+source/xdg-utils/1.1.1-1ubuntu1.16.04.5