cpio: Directory traversal vulnerability cpio contains a flaw which may allow a specially crafted cpio archive to extract files to an arbitrary directory. cpio 2005-06-20 2005-06-20 90619 local 2.6-r3 2.6-r3

cpio is a file archival tool which can also read and write tar files.

A vulnerability has been found in cpio that can potentially allow a cpio archive to extract its files to an arbitrary directory of the creator's choice.

An attacker could create a malicious cpio archive which would create files in arbitrary locations on the victim's system. This issue could also be used in conjunction with a previous race condition vulnerability (CAN-2005-1111) to change permissions on files owned by the victim.

There is no known workaround at this time.

All cpio users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/cpio-2.6-r3" Original Advisory CAN-2005-1111 jaervosz lewk jaervosz