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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: zlib security update
Advisory ID:       RHSA-2023:0943-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:0943
Issue date:        2023-02-28
CVE Names:         CVE-2018-25032 
=====================================================================

1. Summary:

An update for zlib is now available for Red Hat Enterprise Linux 7.7
Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.7 Update Services for SAP
Solutions.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server E4S (v. 7.7) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server Optional E4S (v. 7.7) - ppc64le, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server TUS (v. 7.7) - x86_64

3. Description:

The zlib packages provide a general-purpose lossless data compression
library that is used by many different programs.

Security Fix(es):

* zlib: A flaw found in zlib when compressing (not decompressing) certain
inputs (CVE-2018-25032)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

2067945 - CVE-2018-25032 zlib: A flaw found in zlib when compressing (not decompressing) certain inputs

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.7):

Source:
zlib-1.2.7-18.el7_7.1.src.rpm

x86_64:
zlib-1.2.7-18.el7_7.1.i686.rpm
zlib-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-devel-1.2.7-18.el7_7.1.i686.rpm
zlib-devel-1.2.7-18.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server E4S (v. 7.7):

Source:
zlib-1.2.7-18.el7_7.1.src.rpm

ppc64le:
zlib-1.2.7-18.el7_7.1.ppc64le.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.ppc64le.rpm
zlib-devel-1.2.7-18.el7_7.1.ppc64le.rpm

x86_64:
zlib-1.2.7-18.el7_7.1.i686.rpm
zlib-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-devel-1.2.7-18.el7_7.1.i686.rpm
zlib-devel-1.2.7-18.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server TUS (v. 7.7):

Source:
zlib-1.2.7-18.el7_7.1.src.rpm

x86_64:
zlib-1.2.7-18.el7_7.1.i686.rpm
zlib-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-devel-1.2.7-18.el7_7.1.i686.rpm
zlib-devel-1.2.7-18.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.7):

x86_64:
minizip-1.2.7-18.el7_7.1.i686.rpm
minizip-1.2.7-18.el7_7.1.x86_64.rpm
minizip-devel-1.2.7-18.el7_7.1.i686.rpm
minizip-devel-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-static-1.2.7-18.el7_7.1.i686.rpm
zlib-static-1.2.7-18.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional E4S (v. 7.7):

ppc64le:
minizip-1.2.7-18.el7_7.1.ppc64le.rpm
minizip-devel-1.2.7-18.el7_7.1.ppc64le.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.ppc64le.rpm
zlib-static-1.2.7-18.el7_7.1.ppc64le.rpm

x86_64:
minizip-1.2.7-18.el7_7.1.i686.rpm
minizip-1.2.7-18.el7_7.1.x86_64.rpm
minizip-devel-1.2.7-18.el7_7.1.i686.rpm
minizip-devel-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-static-1.2.7-18.el7_7.1.i686.rpm
zlib-static-1.2.7-18.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional TUS (v. 7.7):

x86_64:
minizip-1.2.7-18.el7_7.1.i686.rpm
minizip-1.2.7-18.el7_7.1.x86_64.rpm
minizip-devel-1.2.7-18.el7_7.1.i686.rpm
minizip-devel-1.2.7-18.el7_7.1.x86_64.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.i686.rpm
zlib-debuginfo-1.2.7-18.el7_7.1.x86_64.rpm
zlib-static-1.2.7-18.el7_7.1.i686.rpm
zlib-static-1.2.7-18.el7_7.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-25032
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2023 Red Hat, Inc.
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