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

Synopsis:          Moderate: zlib security update
Advisory ID:       RHSA-2023:1095-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:1095
Issue date:        2023-03-07
CVE Names:         CVE-2022-37434
====================================================================
1. Summary:

An update for zlib is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 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: heap-based buffer over-read and overflow in inflate() in inflate.c
via a large gzip header extra field (CVE-2022-37434)

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/):

2116639 - CVE-2022-37434 zlib: heap-based buffer over-read and overflow in inflate() in inflate.c via a large gzip header extra field

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
zlib-1.2.7-21.el7_9.src.rpm

x86_64:
zlib-1.2.7-21.el7_9.i686.rpm
zlib-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
minizip-1.2.7-21.el7_9.i686.rpm
minizip-1.2.7-21.el7_9.x86_64.rpm
minizip-devel-1.2.7-21.el7_9.i686.rpm
minizip-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-devel-1.2.7-21.el7_9.i686.rpm
zlib-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-static-1.2.7-21.el7_9.i686.rpm
zlib-static-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
zlib-1.2.7-21.el7_9.src.rpm

x86_64:
zlib-1.2.7-21.el7_9.i686.rpm
zlib-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
minizip-1.2.7-21.el7_9.i686.rpm
minizip-1.2.7-21.el7_9.x86_64.rpm
minizip-devel-1.2.7-21.el7_9.i686.rpm
minizip-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-devel-1.2.7-21.el7_9.i686.rpm
zlib-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-static-1.2.7-21.el7_9.i686.rpm
zlib-static-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
zlib-1.2.7-21.el7_9.src.rpm

ppc64:
zlib-1.2.7-21.el7_9.ppc.rpm
zlib-1.2.7-21.el7_9.ppc64.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc64.rpm
zlib-devel-1.2.7-21.el7_9.ppc.rpm
zlib-devel-1.2.7-21.el7_9.ppc64.rpm

ppc64le:
zlib-1.2.7-21.el7_9.ppc64le.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc64le.rpm
zlib-devel-1.2.7-21.el7_9.ppc64le.rpm

s390x:
zlib-1.2.7-21.el7_9.s390.rpm
zlib-1.2.7-21.el7_9.s390x.rpm
zlib-debuginfo-1.2.7-21.el7_9.s390.rpm
zlib-debuginfo-1.2.7-21.el7_9.s390x.rpm
zlib-devel-1.2.7-21.el7_9.s390.rpm
zlib-devel-1.2.7-21.el7_9.s390x.rpm

x86_64:
zlib-1.2.7-21.el7_9.i686.rpm
zlib-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-devel-1.2.7-21.el7_9.i686.rpm
zlib-devel-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
minizip-1.2.7-21.el7_9.ppc.rpm
minizip-1.2.7-21.el7_9.ppc64.rpm
minizip-devel-1.2.7-21.el7_9.ppc.rpm
minizip-devel-1.2.7-21.el7_9.ppc64.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc64.rpm
zlib-static-1.2.7-21.el7_9.ppc.rpm
zlib-static-1.2.7-21.el7_9.ppc64.rpm

ppc64le:
minizip-1.2.7-21.el7_9.ppc64le.rpm
minizip-devel-1.2.7-21.el7_9.ppc64le.rpm
zlib-debuginfo-1.2.7-21.el7_9.ppc64le.rpm
zlib-static-1.2.7-21.el7_9.ppc64le.rpm

s390x:
minizip-1.2.7-21.el7_9.s390.rpm
minizip-1.2.7-21.el7_9.s390x.rpm
minizip-devel-1.2.7-21.el7_9.s390.rpm
minizip-devel-1.2.7-21.el7_9.s390x.rpm
zlib-debuginfo-1.2.7-21.el7_9.s390.rpm
zlib-debuginfo-1.2.7-21.el7_9.s390x.rpm
zlib-static-1.2.7-21.el7_9.s390.rpm
zlib-static-1.2.7-21.el7_9.s390x.rpm

x86_64:
minizip-1.2.7-21.el7_9.i686.rpm
minizip-1.2.7-21.el7_9.x86_64.rpm
minizip-devel-1.2.7-21.el7_9.i686.rpm
minizip-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-static-1.2.7-21.el7_9.i686.rpm
zlib-static-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
zlib-1.2.7-21.el7_9.src.rpm

x86_64:
zlib-1.2.7-21.el7_9.i686.rpm
zlib-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-devel-1.2.7-21.el7_9.i686.rpm
zlib-devel-1.2.7-21.el7_9.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
minizip-1.2.7-21.el7_9.i686.rpm
minizip-1.2.7-21.el7_9.x86_64.rpm
minizip-devel-1.2.7-21.el7_9.i686.rpm
minizip-devel-1.2.7-21.el7_9.x86_64.rpm
zlib-debuginfo-1.2.7-21.el7_9.i686.rpm
zlib-debuginfo-1.2.7-21.el7_9.x86_64.rpm
zlib-static-1.2.7-21.el7_9.i686.rpm
zlib-static-1.2.7-21.el7_9.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-2022-37434
https://access.redhat.com/security/updates/classification/#moderate

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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