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Red Hat: RHSA-2015:1715-01 Critical: Spice-Server Memory Corruption

red hat
Calendar Grey September 3, 2015
Dist Redhat Esm H88
A critical patch for CentOS's qemu-server resolves a buffer overflow vulnerability. Ensure you update immediately!
An updated spice-server package that fixes one security issue 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 race condition flaw, leading to a heap-based memory corruption, was found in spice's worker_update_monitors_config() function, which runs under the QEMU-KVM context on the host. A user in a guest could leverage this flaw to crash the host QEMU-KVM process or, possibly, execute arbitrary code with the privileges of the host QEMU-KVM process. (CVE-2015-3247)
This issue was discovered by Frediano Ziglio of Red Hat.
All spice-server users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory security issue memory corruption Red Hat Enterprise Linux important update spice-server

References

https://access.redhat.com/security/cve/CVE-2015-3247 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_7.1.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.1.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: spice-server-0.12.4-12.el6_7.1.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.1.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: spice-server-0.12.4-12.el6_7.1.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.1.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-12.el6_7.1.x86_64.rpm spice-server-devel-0.12.4-12.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: spice-server-0.12.4-12.el6_7.1.src.rpm
x86_64: spice-server-0.12.4-12.el6_7.1.x86_64.rpm spice-server-debuginfo-0.12.4-12.el6_7.1.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-2015:1715-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1715.html
Issue date: 2015-09-03

Topic

An updated spice-server package that fixes one security issue is nowavailable for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory security issue memory corruption Red Hat Enterprise Linux important update 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

1233238 - CVE-2015-3247 spice: memory corruption in worker_update_monitors_config()

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