[ GLSA 200711-18 ] Cpio: Buffer overflow

[GLSA]

Gentoo Linux Security Advisory

Title: Cpio: Buffer overflow (GLSA 200711-18)
Severity: normal
Exploitable: remote
Date: November 14, 2007
Bug(s): #196978
ID: 200711-18

Synopsis


GNU cpio contains a buffer overflow vulnerability, possibly resulting in a
Denial of Service.


Background


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


Affected Packages

Package: app-arch/cpio
Vulnerable: < 2.9-r1
Unaffected: >= 2.9-r1
Architectures: All supported architectures


Description


A buffer overflow vulnerability in the safer_name_suffix() function in
GNU cpio has been discovered.


Impact


A remote attacker could entice a user to open a specially crafted
archive file resulting in a stack-based buffer overflow, possibly
crashing the application. It is disputed whether the execution of
arbitrary code is possible.


Workaround


There is no known workaround at this time.


Resolution


All GNU cpio users should upgrade to the latest version: