[ GLSA 200506-16 ] cpio: Directory traversal vulnerability

[GLSA]

Gentoo Linux Security Advisory

Title: cpio: Directory traversal vulnerability (GLSA 200506-16)
Severity: normal
Exploitable: local
Date: June 20, 2005
Bug(s): #90619
ID: 200506-16

Synopsis

cpio contains a flaw which may allow a specially crafted cpio archive to extract files to an arbitrary directory.

Background

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

Affected Packages

Package: app-arch/cpio
Vulnerable: < 2.6-r3
Unaffected: >= 2.6-r3
Architectures: All supported architectures


Description

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.

Impact

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.

Workaround

There is no known workaround at this time.

Resolution

All cpio users should upgrade to the latest version: