RHEL 7 : zlib (RHSA-2025:8314)

high Nessus Plugin ID 237486

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Synopsis

The remote Red Hat host is missing a security update for zlib.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:8314 advisory.

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

Security Fix(es):

* pcl: zlib: Improper Pointer Arithmetic in pcl (CVE-2025-4638)

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL zlib package based on the guidance in RHSA-2025:8314.

Plugin Details

Severity: High

ID: 237486

File Name: redhat-RHSA-2025-8314.nasl

Version: 1.3

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/29/2025

Updated: 6/5/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2016-9840

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_els:7, p-cpe:/a:redhat:enterprise_linux:zlib-devel, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:zlib-static, p-cpe:/a:redhat:enterprise_linux:minizip, p-cpe:/a:redhat:enterprise_linux:minizip-devel, p-cpe:/a:redhat:enterprise_linux:zlib

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/29/2025

Vulnerability Publication Date: 5/14/2025

Reference Information

CVE: CVE-2016-9840

RHSA: 2025:8314

Detections

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