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Slackware: 'zlib' Data corruption vulnerability Print E-mail
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Posted by 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 <>
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

  "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

Sites are urged to upgrade the zlib package immediately.

The complete advisory may be found here:

(* Security fix *)

Updated zlib package for Slackware 7.1:

Updated zlib package for Slackware 8.0:

Updated zlib package for Slackware -current:


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


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

Afterwards, restart any running programs that link to

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

- Slackware Linux Security Team

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