cpio: Directory traversal vulnerability
Gentoo Linux Security Advisory
||GLSA 200506-16 / cpio
||June 20, 2005
||June 20, 2005: 01
All supported architectures
cpio contains a flaw which may allow a specially crafted cpio archive to
extract files to an arbitrary directory.
cpio is a file archival tool which can also read and write tar
A vulnerability has been found in cpio that can potentially allow
a cpio archive to extract its files to an arbitrary directory of the
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
There is no known workaround at this time.
All cpio users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/cpio-2.6-r3"