Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 620
Alerts This Week
Warning Icon 1 620

Ubuntu: USN-2084-1 Important: libXfont Local Security Issue

red hat
Calendar Grey September 3, 2015
Dist Redhat Esm H88
Crucial advisory for Red Hat’s libXfont addresses three security flaws, affecting users on versions 6 and 7.
An updated libXfont package that fixes three security issues is now available for Red Hat Enterprise Linux 6 and 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

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.

Topics%20covered

Topics Covered

security advisory Red Hat local issue important impact libXfont X.Org

References

https://access.redhat.com/security/cve/CVE-2015-1802 https://access.redhat.com/security/cve/CVE-2015-1803 https://access.redhat.com/security/cve/CVE-2015-1804 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: libXfont-1.4.5-5.el6_7.src.rpm
i386: libXfont-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.i686.rpm
x86_64: libXfont-1.4.5-5.el6_7.x86_64.rpm libXfont-debuginfo-1.4.5-5.el6_7.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: libXfont-debuginfo-1.4.5-5.el6_7.i686.rpm libXfont-devel-1.4.5-5.el6_7.i686.rpm
x86_64: libXfont-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.x86_64.rpm libXfont-devel-1.4.5-5.el6_7.i686.rpm libXfont-devel-1.4.5-5.el6_7.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: libXfont-1.4.5-5.el6_7.src.rpm
x86_64: libXfont-1.4.5-5.el6_7.x86_64.rpm libXfont-debuginfo-1.4.5-5.el6_7.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: libXfont-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.x86_64.rpm libXfont-devel-1.4.5-5.el6_7.i686.rpm libXfont-devel-1.4.5-5.el6_7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: libXfont-1.4.5-5.el6_7.src.rpm
i386: libXfont-1.4.5-5.el6_7.i686.rpm libXfont-debuginfo-1.4.5-5.el6_7.i686.rpm
ppc64: libXfont-1.4.5-5.el6_7.ppc64.rpm libXfont-debuginfo-1.4.5-5.el6_7.ppc64.rpm
s390x: libXfont-1.4.5-5.el6_7.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1708-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1708.html
Issue date: 2015-09-03

Topic

An updated libXfont package that fixes three security issues is nowavailable for Red Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat local issue important impact libXfont X.Org

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1203715 - CVE-2015-1802 libXfont: missing range check in bdfReadProperties

1203718 - CVE-2015-1803 libXfont: crash on invalid read in bdfReadCharacters1203719 - CVE-2015-1804 libXfont: out-of-bounds memory access in bdfReadCharacters

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.