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Red Hat 6: RHSA-2011:0426-01 Moderate: spice-xpi Remote Code Execution

red hat
Calendar Grey April 7, 2011
Dist Redhat Esm H88
Investigate the recently released moderate spice-xpi security patch for Red Hat, which tackles two critical vulnerabilities affecting user security.
An updated spice-xpi package that fixes two security issues is now available for Red Hat Enterprise Linux 6

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

Summary

The Simple Protocol for Independent Computing Environments (SPICE) is a remote display protocol used in Red Hat Enterprise Linux for viewing virtualized guests running on the Kernel-based Virtual Machine (KVM) hypervisor, or on Red Hat Enterprise Virtualization Hypervisor.
The spice-xpi package provides a plug-in that allows the SPICE client to run from within Mozilla Firefox.
An uninitialized pointer use flaw was found in the SPICE Firefox plug-in. If a user were tricked into visiting a malicious web page with Firefox while the SPICE plug-in was enabled, it could cause Firefox to crash or, possibly, execute arbitrary code with the privileges of the user running Firefox. (CVE-2011-1179)
It was found that the SPICE Firefox plug-in used a predictable name for one of its log files. A local attacker could use this flaw to conduct a symbolic link attack, allowing them to overwrite arbitrary files accessible to the user running Firefox. (CVE-2011-0012)
Users of spice-xpi should upgrade to this updated package, which contains backported patches to correct these issues. After installing the update, Firefox must be restarted for the changes to take effect.

Topics%20covered

Topics Covered

security advisory moderate security issue Red Hat Enterprise web threat browser plugin spice-xpi

References

https://access.redhat.com/security/cve/CVE-2011-0012 https://access.redhat.com/security/cve/CVE-2011-1179 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: spice-xpi-2.4-1.el6_0.2.i686.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.i686.rpm
x86_64: spice-xpi-2.4-1.el6_0.2.x86_64.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: spice-xpi-2.4-1.el6_0.2.x86_64.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386: spice-xpi-2.4-1.el6_0.2.i686.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.i686.rpm
x86_64: spice-xpi-2.4-1.el6_0.2.x86_64.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386: spice-xpi-2.4-1.el6_0.2.i686.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.i686.rpm
x86_64: spice-xpi-2.4-1.el6_0.2.x86_64.rpm spice-xpi-debuginfo-2.4-1.el6_0.2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package


Advisory ID: RHSA-2011:0426-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:0426.html
Issue date: 2011-04-07

Topic

An updated spice-xpi package that fixes two security issues is nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate security issue Red Hat Enterprise web threat browser plugin spice-xpi

Relevant Releases Architectures

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

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

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

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

Bugs Fixed

639869 - CVE-2011-0012 spice-xpi: symlink attack on usbrdrctl log file

689931 - CVE-2011-1179 spice-xpi: unitialized pointer writes possible when getting plugin properties

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