==========================================================================
Ubuntu Security Notice USN-6755-1
April 29, 2024
cpio vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
GNU cpio could be made to write files outside the target directory.
Software Description:
- cpio: a tool to manage archives of files
Details:
Ingo Brückl discovered that cpio contained a path traversal vulnerability.
If a user or automated system were tricked into extracting a specially
crafted cpio archive, an attacker could possibly use this issue to write
arbitrary files outside the target directory on the host, even if using the
option --no-absolute-filenames.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10
   cpio                            2.13+dfsg-7.1ubuntu0.1
Ubuntu 22.04 LTS
   cpio                            2.13+dfsg-7ubuntu0.1
Ubuntu 20.04 LTS
   cpio                            2.13+dfsg-2ubuntu0.4
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6755-1
   CVE-2023-7207
Package Information:
   https://launchpad.net/ubuntu/+source/cpio/2.13+dfsg-7.1ubuntu0.1
   https://launchpad.net/ubuntu/+source/cpio/2.13+dfsg-7ubuntu0.1
   https://launchpad.net/ubuntu/+source/cpio/2.13+dfsg-2ubuntu0.4