Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-189-1: cpio vulnerabilities

29 September 2005

cpio vulnerabilities

Reduce your security exposure

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

Releases

Details

Imran Ghory found a race condition in the handling of output files.
While a file was unpacked with cpio, a local attacker with write
permissions to the target directory could exploit this to change the
permissions of arbitrary files of the cpio user. (CAN-2005-1111)

Imran Ghory discovered a path traversal vulnerability. Even when the
--no-absolute-filenames option was specified, cpio did not filter out
".." path components. By tricking an user into unpacking a malicious
cpio archive, this could be exploited to install files in arbitrary
paths with the privileges of the user calling cpio. (CAN-2005-1229)

Reduce your security exposure

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 5.04
  • cpio -
Ubuntu 4.10
  • cpio -

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