RHEL 6 / 7 : libXfont (RHSA-2015:1708)

critical Nessus Plugin ID 85973

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Synopsis

The remote Red Hat host is missing one or more security updates for libXfont.

Description

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2015:1708 advisory.

The libXfont package provides the X.Org libXfont runtime library. X.Org is an open source implementation of the X Window System.

An integer overflow flaw was found in the way libXfont processed certain Glyph Bitmap Distribution Format (BDF) fonts. A malicious, local user could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with the privileges of the X.Org server. (CVE-2015-1802)

An integer truncation flaw was discovered in the way libXfont processed certain Glyph Bitmap Distribution Format (BDF) fonts. A malicious, local user could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with the privileges of the X.Org server. (CVE-2015-1804)

A NULL pointer dereference flaw was discovered in the way libXfont processed certain Glyph Bitmap Distribution Format (BDF) fonts.
A malicious, local user could use this flaw to crash the X.Org server.
(CVE-2015-1803)

All libXfont users are advised to upgrade to this updated package, which contains backported patches to correct these issues.

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

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

Solution

Update the RHEL libXfont package based on the guidance in RHSA-2015:1708.

Plugin Details

Severity: Critical

ID: 85973

File Name: redhat-RHSA-2015-1708.nasl

Version: 1.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/17/2015

Updated: 3/20/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2015-1804

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libxfont-devel, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:libxfont

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: 9/3/2015

Vulnerability Publication Date: 3/20/2015

Reference Information

CVE: CVE-2015-1802, CVE-2015-1803, CVE-2015-1804

CWE: 190, 476, 805

RHSA: 2015:1708

Detections

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