USN-6755-1: GNU cpio vulnerabilities

29 April 2024

GNU cpio could be made to write files outside the target directory.

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Releases

Packages

  • 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.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10
Ubuntu 22.04
Ubuntu 20.04

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

References

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Further reading