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Critical Zlib Compression Vulnerability in Red Hat Enterprise Linux 7.4

red hat
Calendar Grey February 28, 2023
Dist Redhat Esm H88
Crucial zlib security patch issued for Red Hat Enterprise Linux 7.4, classified as Critical owing to a compression vulnerability.
An update for zlib is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support

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

Summary

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.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux critical fix security impact important update compression flaw zlib issue

References

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

Package List

Red Hat Enterprise Linux Server AUS (v. 7.4):
Source: zlib-1.2.7-17.el7_4.1.src.rpm
x86_64: zlib-1.2.7-17.el7_4.1.i686.rpm zlib-1.2.7-17.el7_4.1.x86_64.rpm zlib-debuginfo-1.2.7-17.el7_4.1.i686.rpm zlib-debuginfo-1.2.7-17.el7_4.1.x86_64.rpm zlib-devel-1.2.7-17.el7_4.1.i686.rpm zlib-devel-1.2.7-17.el7_4.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.4):
x86_64: minizip-1.2.7-17.el7_4.1.i686.rpm minizip-1.2.7-17.el7_4.1.x86_64.rpm minizip-devel-1.2.7-17.el7_4.1.i686.rpm minizip-devel-1.2.7-17.el7_4.1.x86_64.rpm zlib-debuginfo-1.2.7-17.el7_4.1.i686.rpm zlib-debuginfo-1.2.7-17.el7_4.1.x86_64.rpm zlib-static-1.2.7-17.el7_4.1.i686.rpm zlib-static-1.2.7-17.el7_4.1.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0976-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0976
Issue date: 2023-02-28

Topic

An update for zlib is now available for Red Hat Enterprise Linux 7.4Advanced Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux critical fix security impact important update compression flaw zlib issue

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64

Bugs Fixed

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

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