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Red Hat Enterprise Linux 6 and 7: RHSA-2015:1917-01 Critical libwmf Issue

red hat
Calendar Grey October 20, 2015
Dist Redhat Esm H88
==================================================================== Red Hat Security Advisory Synop
Updated libwmf packages that fix multiple security issues are 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

libwmf is a library for reading and converting Windows Metafile Format (WMF) vector graphics. libwmf is used by applications such as GIMP and ImageMagick.
It was discovered that libwmf did not correctly process certain WMF (Windows Metafiles) with embedded BMP images. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly use this flaw to execute arbitrary code with the privileges of the user running the application. (CVE-2015-0848, CVE-2015-4588)
It was discovered that libwmf did not properly process certain WMF files. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly exploit this flaw to cause a crash or execute arbitrary code with the privileges of the user running the application. (CVE-2015-4696)
It was discovered that libwmf did not properly process certain WMF files. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly exploit this flaw to cause a crash. (CVE-2015-4695)
All users of libwmf are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, all applications using libwmf must be restarted for the update to take effect.

Topics%20covered

Topics Covered

security advisory Red Hat update buffer overflow remote code execution important libwmf

References

https://access.redhat.com/security/cve/CVE-2015-0848 https://access.redhat.com/security/cve/CVE-2015-4588 https://access.redhat.com/security/cve/CVE-2015-4695 https://access.redhat.com/security/cve/CVE-2015-4696 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: libwmf-0.2.8.4-25.el6_7.src.rpm
i386: libwmf-0.2.8.4-25.el6_7.i686.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.i686.rpm libwmf-lite-0.2.8.4-25.el6_7.i686.rpm
x86_64: libwmf-0.2.8.4-25.el6_7.i686.rpm libwmf-0.2.8.4-25.el6_7.x86_64.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.i686.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.x86_64.rpm libwmf-lite-0.2.8.4-25.el6_7.i686.rpm libwmf-lite-0.2.8.4-25.el6_7.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: libwmf-debuginfo-0.2.8.4-25.el6_7.i686.rpm libwmf-devel-0.2.8.4-25.el6_7.i686.rpm
x86_64: libwmf-debuginfo-0.2.8.4-25.el6_7.i686.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.x86_64.rpm libwmf-devel-0.2.8.4-25.el6_7.i686.rpm libwmf-devel-0.2.8.4-25.el6_7.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: libwmf-0.2.8.4-25.el6_7.src.rpm
x86_64: libwmf-0.2.8.4-25.el6_7.i686.rpm libwmf-0.2.8.4-25.el6_7.x86_64.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.i686.rpm libwmf-debuginfo-0.2.8.4-25.el6_7.x86_64.rpm libwmf-devel-0.2.8.4-25.el6_7.i686.rpm libwmf-devel-0.2.8.4-25.el6_7.x86_64.rpm libwmf-lite-0.2.8.4-25.el6_7.i686.rpm libwmf-lite-0.2.8.4-25.el6_7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: libwmf-0.2.8.4-25.el6_7.src.rpm
i386: libwmf-0.2.8.4-25.el6_7.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1917-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1917.html
Issue date: 2015-10-20

Topic

Updated libwmf packages that fix multiple security issues are now availablefor 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 update buffer overflow remote code execution important libwmf

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 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 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

1227243 - CVE-2015-0848 libwmf: heap overflow when decoding BMP images

1235665 - CVE-2015-4695 libwmf: heap buffer overread in meta.h

1235669 - CVE-2015-4696 libwmf: use-after-free flaw in meta.h

1272993 - CVE-2015-4588 libwmf: heap overflow within the RLE decoding of embedded BMP images

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