Synopsis

zlib security update

Type/Severity

Security Advisory: Important

Topic

Updated zlib packages that fix a buffer overflow are now available for Red
Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

Description

Zlib is a general-purpose lossless data compression library that is used
by many different programs.

A previous zlib update, RHSA-2005:569 (CAN-2005-2096) fixed a flaw in zlib
that could allow a carefully crafted compressed stream to crash an
application. While the original patch corrected the reported overflow,
Markus Oberhumer discovered additional ways a stream could trigger an
overflow. An attacker could create a carefully crafted compressed stream
that would cause an application to crash if the stream is opened by a user.
As an example, an attacker could create a malicious PNG image file that
would cause a Web browser or mail viewer to crash if the image is viewed.
The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned
the name CAN-2005-1849 to this issue.

Note that the versions of zlib shipped with Red Hat Enterprise
Linux 2.1 and 3 are not vulnerable to this issue.

All users should update to these errata packages that contain a patch
from Mark Adler that corrects this issue.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc

Fixes

• BZ - 163037 - CAN-2005-1849 zlib buffer overflow

CVEs

• CVE-2005-1849

References

(none)

Red Hat Enterprise Linux Server 4

SRPM
zlib-1.2.1.2-1.2.src.rpm	SHA-256: 5dc5eced2242057d5f69805c0014394fdb299c0ee5f1cdbbc806b7a59b16b3b4
x86_64
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.x86_64.rpm	SHA-256: a3200e0e777b7bdebb4a5e93bbba664b58ecd44f5c3ba55f9af79fe6e11adb7f
zlib-1.2.1.2-1.2.x86_64.rpm	SHA-256: a3200e0e777b7bdebb4a5e93bbba664b58ecd44f5c3ba55f9af79fe6e11adb7f
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711
zlib-devel-1.2.1.2-1.2.x86_64.rpm	SHA-256: 6f453b85b022c414e883c913468969dc0f0021d72e7ab98166f6bb77b35e319c
zlib-devel-1.2.1.2-1.2.x86_64.rpm	SHA-256: 6f453b85b022c414e883c913468969dc0f0021d72e7ab98166f6bb77b35e319c
ia64
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.ia64.rpm	SHA-256: 93cf974288bf9d0ab173c03320641085be83e3cdf22fa7a9c659f8c21a4e58b2
zlib-1.2.1.2-1.2.ia64.rpm	SHA-256: 93cf974288bf9d0ab173c03320641085be83e3cdf22fa7a9c659f8c21a4e58b2
zlib-devel-1.2.1.2-1.2.ia64.rpm	SHA-256: 3688ea3ca0ea8669fdc5dc769605caaf7b037dbe0eaac6cf5e670679abcb5f40
zlib-devel-1.2.1.2-1.2.ia64.rpm	SHA-256: 3688ea3ca0ea8669fdc5dc769605caaf7b037dbe0eaac6cf5e670679abcb5f40
i386
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711

Red Hat Enterprise Linux Workstation 4

SRPM
zlib-1.2.1.2-1.2.src.rpm	SHA-256: 5dc5eced2242057d5f69805c0014394fdb299c0ee5f1cdbbc806b7a59b16b3b4
x86_64
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.x86_64.rpm	SHA-256: a3200e0e777b7bdebb4a5e93bbba664b58ecd44f5c3ba55f9af79fe6e11adb7f
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711
zlib-devel-1.2.1.2-1.2.x86_64.rpm	SHA-256: 6f453b85b022c414e883c913468969dc0f0021d72e7ab98166f6bb77b35e319c
ia64
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.ia64.rpm	SHA-256: 93cf974288bf9d0ab173c03320641085be83e3cdf22fa7a9c659f8c21a4e58b2
zlib-devel-1.2.1.2-1.2.ia64.rpm	SHA-256: 3688ea3ca0ea8669fdc5dc769605caaf7b037dbe0eaac6cf5e670679abcb5f40
i386
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711

Red Hat Enterprise Linux Desktop 4

SRPM
zlib-1.2.1.2-1.2.src.rpm	SHA-256: 5dc5eced2242057d5f69805c0014394fdb299c0ee5f1cdbbc806b7a59b16b3b4
x86_64
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-1.2.1.2-1.2.x86_64.rpm	SHA-256: a3200e0e777b7bdebb4a5e93bbba664b58ecd44f5c3ba55f9af79fe6e11adb7f
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711
zlib-devel-1.2.1.2-1.2.x86_64.rpm	SHA-256: 6f453b85b022c414e883c913468969dc0f0021d72e7ab98166f6bb77b35e319c
i386
zlib-1.2.1.2-1.2.i386.rpm	SHA-256: fa42b6c6370096cd4047caf528d91aee06ebe45757fb2a4a8ca0d179774746a3
zlib-devel-1.2.1.2-1.2.i386.rpm	SHA-256: 4146a3e1da84374c335cafd4cea539b68ee0f670af1792c2e98699510ca5e711

Red Hat Enterprise Linux for IBM z Systems 4

SRPM
zlib-1.2.1.2-1.2.src.rpm	SHA-256: 5dc5eced2242057d5f69805c0014394fdb299c0ee5f1cdbbc806b7a59b16b3b4
s390x
zlib-1.2.1.2-1.2.s390.rpm	SHA-256: 0d380555373b595276607e5f0496125fa5b4202401e6072b182e260956bcd309
zlib-1.2.1.2-1.2.s390x.rpm	SHA-256: eee09ea864df7b7a3c107696a4961e97c942222991860d51cf5b30c640c7ead3
zlib-devel-1.2.1.2-1.2.s390.rpm	SHA-256: 25653a9ab7fbede0c9c3105ba42b4cb7a6e260b6368dac0da06db6358be06a12
zlib-devel-1.2.1.2-1.2.s390x.rpm	SHA-256: 88d5a7b7c8b4eede5bde0cad61641c13892d7398aeae9dbe9853baa1b3cf6277
s390
zlib-1.2.1.2-1.2.s390.rpm	SHA-256: 0d380555373b595276607e5f0496125fa5b4202401e6072b182e260956bcd309
zlib-devel-1.2.1.2-1.2.s390.rpm	SHA-256: 25653a9ab7fbede0c9c3105ba42b4cb7a6e260b6368dac0da06db6358be06a12

Red Hat Enterprise Linux for Power, big endian 4

SRPM
zlib-1.2.1.2-1.2.src.rpm	SHA-256: 5dc5eced2242057d5f69805c0014394fdb299c0ee5f1cdbbc806b7a59b16b3b4
ppc
zlib-1.2.1.2-1.2.ppc.rpm	SHA-256: ae717e39e88e0e4d684184e63c3abf9af8cccdb4511f69ff74c17f852c1462cb
zlib-1.2.1.2-1.2.ppc64.rpm	SHA-256: c994e28bd289b7720853ca22f79ecf702474b1e031ffb13d583ef911a23d2f8d
zlib-devel-1.2.1.2-1.2.ppc.rpm	SHA-256: 0ee198eaeef0522abcfbcd295abd5de57970573dc8e55c3df00ea96475106777
zlib-devel-1.2.1.2-1.2.ppc64.rpm	SHA-256: 6d5fa701d1098cbd53226914ee31a245fcac41abf51585f7538df3e194096179