zlib: Denial of service vulnerability — GLSA 200408-26

The zlib library contains a Denial of Service vulnerability.

Affected Packages

sys-libs/zlib on all architectures
Affected versions <= 1.2.1-r2
Unaffected versions >= 1.2.1-r3

Background

zlib is a general-purpose data-compression library.

Description

zlib contains a bug in the handling of errors in the "inflate()" and "inflateBack()" functions.

Impact

An attacker could exploit this vulnerability to launch a Denial of Service attack on any application using the zlib library.

Workaround

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of zlib.

Resolution

All zlib users should upgrade to the latest version:

 # emerge sync
 
 # emerge -pv ">=sys-libs/zlib-1.2.1-r3"
 # emerge ">=sys-libs/zlib-1.2.1-r3"

You should also run revdep-rebuild to rebuild any packages that depend on older versions of zlib :

 # revdep-rebuild

References

Release Date
August 27, 2004

Latest Revision
May 22, 2006: 02

Severity
normal

Exploitable
remote

Bugzilla entries