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RHEL 2.1 / 3 / 4 / 5 : lynx (RHSA-2008:0965)

critical Nessus Plugin ID 34505

Synopsis

The remote Red Hat host is missing a security update.

Description

An updated lynx package that corrects two security issues is now available for Red Hat Enterprise Linux 2.1, 3, 4, and 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

Lynx is a text-based Web browser.

An arbitrary command execution flaw was found in the Lynx 'lynxcgi:' URI handler. An attacker could create a web page redirecting to a malicious URL that could execute arbitrary code as the user running Lynx in the non-default 'Advanced' user mode. (CVE-2008-4690)

Note: In these updated lynx packages, Lynx will always prompt users before loading a 'lynxcgi:' URI. Additionally, the default lynx.cfg configuration file now marks all 'lynxcgi:' URIs as untrusted by default.

A flaw was found in a way Lynx handled '.mailcap' and '.mime.types' configuration files. Files in the browser's current working directory were opened before those in the user's home directory. A local attacker, able to convince a user to run Lynx in a directory under their control, could possibly execute arbitrary commands as the user running Lynx. (CVE-2006-7234)

All users of Lynx are advised to upgrade to this updated package, which contains backported patches correcting these issues.

Solution

Update the affected lynx package.

See Also

https://access.redhat.com/security/cve/cve-2006-7234

https://access.redhat.com/security/cve/cve-2008-4690

https://access.redhat.com/errata/RHSA-2008:0965

Plugin Details

Severity: Critical

ID: 34505

File Name: redhat-RHSA-2008-0965.nasl

Version: 1.26

Type: local

Agent: unix

Published: 10/28/2008

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:4.7, cpe:/o:redhat:enterprise_linux:3, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:lynx, cpe:/o:redhat:enterprise_linux:5.2, cpe:/o:redhat:enterprise_linux:2.1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/27/2008

Vulnerability Publication Date: 10/22/2008

Reference Information

CVE: CVE-2006-7234, CVE-2008-4690

BID: 15395

RHSA: 2008:0965