GNU cpio: Multiple vulnerabilities

Background

GNU cpio copies files into or out of a cpio or tar archive.

Description

Two vulnerabilities have been discovered in GNU cpio:

• The list_file function in GNU cpio contains a heap-based buffer overflow vulnerability (CVE-2014-9112)
• A directory traversal vulnerability has been found in GNU cpio (CVE-2015-1197)

Impact

A remote attacker may be able to entice a user to open a specially crafted archive using GNU cpio, possibly resulting in execution of arbitrary code, a Denial of Service condition, or overwriting arbitrary files.

Workaround

There is no known workaround at this time.

Resolution

All GNU cpio users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-arch/cpio-2.11-r3"