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Slackware: 'zlib' Data corruption vulnerability Print E-mail
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Posted by LinuxSecurity.com Team   
Slackware New zlib packages are available to fix a security problem which may impactprograms that link with zlib.


Date: Mon, 11 Mar 2002 14:12:40 -0800 (PST)
From: Slackware Security Team <security@slackware.com>
To: slackware-security@slackware.com
Subject: [slackware-security] zlib upgrade fixes vulnerability


New zlib packages are available to fix a security problem which may impact
programs that link with zlib.

Here's the information from the Slackware 8.0 ChangeLog:

----------------------------
Mon Mar 11 13:32:40 PST 2002
patches/packages/zlib.tgz:  Upgraded to zlib-1.1.4.  This fixes a security
  problem which may introduce vulnerabilities into any program that links with
  zlib.  Quoting the advisory on zlib.org:

  "Depending upon how and where the zlib routines are called from the given
   program, the resulting vulnerability may have one or more of the following
   impacts: denial of service, information leakage, or execution of arbitrary
   code."

Sites are urged to upgrade the zlib package immediately.

The complete advisory may be found here:
    http://www.zlib.org/advisory-2002-03-11.txt

(* Security fix *)
----------------------------


WHERE TO FIND THE NEW PACKAGE:
------------------------------
Updated zlib package for Slackware 7.1: 
ftp://ftp.slackware.com/pub/slackware/slackware-7.1/patches/packages/zlib.tgz

Updated zlib package for Slackware 8.0: 
ftp://ftp.slackware.com/pub/slackware/slackware-8.0/patches/packages/zlib.tgz

Updated zlib package for Slackware -current: 
ftp://ftp.slackware.com/pub/slackware/slackware-current/zlib-1.1.4/packages/zlib-1.1.4-i386-1.tgz


MD5 SIGNATURE:
--------------

Here is the md5sum for the package:

Slackware 7.1:
8371e3ea1d8d0f624edc43ede13e82dd  zlib.tgz

Slackware 8.0:
7e5187be97632b446c214cf62fc94fff  zlib.tgz

Slackware -current:
5d9968475642c822ae11cce8c5504ece  zlib-1.1.4-i386-1.tgz


INSTALLATION INSTRUCTIONS:
--------------------------

As root, upgrade to the new zlib.tgz package:
# upgradepkg zlib.tgz

Afterwards, restart any running programs that link to libz.so.

Remember, it's also a good idea to backup configuration files before
upgrading packages.

- Slackware Linux Security Team
   http://www.slackware.com




 
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