GLSA 200408-26: zlib: Denial of service vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	zlib: Denial of service vulnerability
Date:	08/27/2004
Bugs:	#61749
ID:	200408-26

Synopsis

The zlib library contains a Denial of Service vulnerability.

Background

zlib is a general-purpose data-compression library.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-libs/zlib	<= 1.2.1-r2	>= 1.2.1-r3	All supported architectures

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

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200408-26.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.