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Red Hat 6: RHSA-2015:1889-02 Critical: Spice-Server Memory Leak

red hat
Calendar Grey October 12, 2015
Dist Redhat Esm H88
The newly released spice-server update for RHEL 6 mitigates two critical vulnerabilities, bolstering the security of remote connections.
An updated spice-server 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.

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

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

Summary

The Simple Protocol for Independent Computing Environments (SPICE) is a remote display protocol for virtual environments. SPICE users can access a virtualized desktop or server from the local system or any system with network access to the server. SPICE is 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 Hypervisors.
A heap-based buffer overflow flaw was found in the way SPICE handled certain guest QXL commands related to surface creation. A user in a guest could use this flaw to read and write arbitrary memory locations on the host. (CVE-2015-5261)
A heap-based buffer overflow flaw was found in the way spice handled certain QXL commands related to the "surface_id" parameter. A user in a guest could use this flaw to crash the host QEMU-KVM process or, possibly, execute arbitrary code with the privileges of the host QEMU-KVM process. (CVE-2015-5260)
These issues were discovered by Frediano Ziglio of Red Hat.
All spice-server users are advised to upgrade to this updated package, which contains backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory security update buffer overflow remote access Red Hat Enterprise Linux important spice-server

References

https://access.redhat.com/security/cve/CVE-2015-5260 https://access.redhat.com/security/cve/CVE-2015-5261 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: spice-server-0.12.4-12.el6_7.3.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.3.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: spice-server-0.12.4-12.el6_7.3.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.3.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: spice-server-0.12.4-12.el6_7.3.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.3.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: spice-server-0.12.4-12.el6_7.3.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.3.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.3.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1889-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1889.html
Issue date: 2015-10-12

Topic

An updated spice-server package that fixes two security issues is nowavailable for Red Hat Enterprise Linux 6.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 security update buffer overflow remote access Red Hat Enterprise Linux important spice-server

Relevant Releases Architectures

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

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

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

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

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

Bugs Fixed

1260822 - CVE-2015-5260 spice: insufficient validation of surface_id parameter can cause crash

1261889 - CVE-2015-5261 spice: host memory access from guest using crafted images

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