CentOS 4 : zlib (CESA-2005:569)

High Nessus Plugin ID 21947


The remote CentOS host is missing one or more security updates.


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.

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

Tavis Ormandy discovered a buffer overflow affecting Zlib version 1.2 and above. 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 which would cause a web browser or mail viewer to crash if the image is viewed. The Common Vulnerabilities and Exposures project assigned the name CVE-2005-2096 to this issue.

Please note that the versions of Zlib as shipped with Red Hat Enterprise Linux 2.1 and 3 are not vulnerable to this issue.

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


Update the affected zlib packages.

See Also




Plugin Details

Severity: High

ID: 21947

File Name: centos_RHSA-2005-569.nasl

Version: 1.16

Type: local

Agent: unix

Published: 2006/07/05

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:zlib, p-cpe:/a:centos:centos:zlib-devel, cpe:/o:centos:centos:4

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

Patch Publication Date: 2005/07/06

Vulnerability Publication Date: 2005/07/06

Reference Information

CVE: CVE-2005-2096

RHSA: 2005:569