==========================================================================
Ubuntu Security Notice USN-6808-1
June 05, 2024

atril vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Atril could be made to create arbitrary files when opening a specially
crafted EPUB file.

Software Description:
- atril: Official Document Viewer of the MATE Desktop Environment

Details:

It was discovered that Atril was vulnerable to a path traversal attack.
An attacker could possibly use this vulnerability to create arbitrary
files on the host filesystem with user privileges.

Update instructions:

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

Ubuntu 23.10
    atril                           1.26.0-2ubuntu0.1
    atril-common                    1.26.0-2ubuntu0.1
    libatrildocument3               1.26.0-2ubuntu0.1

Ubuntu 22.04 LTS
    atril                           1.26.0-1ubuntu1.1
    atril-common                    1.26.0-1ubuntu1.1
    libatrildocument3               1.26.0-1ubuntu1.1

Ubuntu 20.04 LTS
    atril                           1.24.0-1ubuntu0.1
    atril-common                    1.24.0-1ubuntu0.1
    libatrildocument3               1.24.0-1ubuntu0.1

Ubuntu 18.04 LTS
    atril                           1.20.1-2ubuntu2+esm1
                                    Available with Ubuntu Pro
    atril-common                    1.20.1-2ubuntu2+esm1
                                    Available with Ubuntu Pro
    libatrildocument3               1.20.1-2ubuntu2+esm1
                                    Available with Ubuntu Pro

Ubuntu 16.04 LTS
    atril                           1.12.2-1ubuntu0.3+esm1
                                    Available with Ubuntu Pro
    atril-common                    1.12.2-1ubuntu0.3+esm1
                                    Available with Ubuntu Pro
    libatrildocument3               1.12.2-1ubuntu0.3+esm1
                                    Available with Ubuntu Pro

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

References:
    https://ubuntu.com/security/notices/USN-6808-1
    CVE-2023-52076

Package Information:
    https://launchpad.net/ubuntu/+source/atril/1.26.0-2ubuntu0.1
    https://launchpad.net/ubuntu/+source/atril/1.26.0-1ubuntu1.1
    https://launchpad.net/ubuntu/+source/atril/1.24.0-1ubuntu0.1