1. Ubuntu Security Notices
  2. USN-6755-1

USN-6755-1: GNU cpio vulnerabilities

Publication date

29 April 2024

Overview

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

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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic cpio –  2.13+dfsg-7.1ubuntu0.1
22.04 jammy cpio –  2.13+dfsg-7ubuntu0.1
20.04 focal cpio –  2.13+dfsg-2ubuntu0.4

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References

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