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

high Nessus Plugin ID 85973

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Synopsis

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

Description

An updated libXfont package that fixes three security issues is now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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.

Solution

Update the affected libXfont, libXfont-debuginfo and / or libXfont-devel packages.

See Also

https://access.redhat.com/errata/RHSA-2015:1708

https://access.redhat.com/security/cve/cve-2015-1804

https://access.redhat.com/security/cve/cve-2015-1802

https://access.redhat.com/security/cve/cve-2015-1803

Plugin Details

Severity: High

ID: 85973

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

Version: 1.12

Type: local

Agent: unix

Published: 9/17/2015

Updated: 10/24/2019

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libxfont, p-cpe:/a:redhat:enterprise_linux:libxfont-debuginfo, p-cpe:/a:redhat:enterprise_linux:libxfont-devel, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.7, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.1, cpe:/o:redhat:enterprise_linux:7.2, cpe:/o:redhat:enterprise_linux:7.3, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.6, cpe:/o:redhat:enterprise_linux:7.7

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

RHSA: 2015:1708