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Red Hat 6 RHSA-2017-0253-01 Moderate: Spice-Server DoS and Buffer Overflow

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Calendar Grey February 6, 2017
Scroller Redhat
Red Hat recommends a prudent security patch for spice-server that impacts Red Hat Enterprise Linux 6. Update immediately!
An update for spice-server is now available for Red Hat Enterprise Linux 6

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

All applications using SPICE (most notably all QEMU-KVM instances using the SPICE console) must be restarted for this update to take effect.

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.
Security Fix(es):
* A vulnerability was discovered in spice in the server's protocol handling. An authenticated attacker could send crafted messages to the spice server causing a heap overflow leading to a crash or possible code execution. (CVE-2016-9577)
* A vulnerability was discovered in spice in the server's protocol handling. An attacker able to connect to the spice server could send crafted messages which would cause the process to crash. (CVE-2016-9578)
These issues were discovered by Frediano Ziglio (Red Hat).

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow DoS threat spice-server

References

https://access.redhat.com/security/cve/CVE-2016-9577 https://access.redhat.com/security/cve/CVE-2016-9578 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: spice-server-0.12.4-13.el6_8.2.src.rpm
x86_64: spice-server-0.12.4-13.el6_8.2.x86_64.rpm spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm spice-server-devel-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: spice-server-0.12.4-13.el6_8.2.src.rpm
x86_64: spice-server-0.12.4-13.el6_8.2.x86_64.rpm spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm spice-server-devel-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: spice-server-0.12.4-13.el6_8.2.src.rpm
x86_64: spice-server-0.12.4-13.el6_8.2.x86_64.rpm spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
x86_64: spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm spice-server-devel-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: spice-server-0.12.4-13.el6_8.2.src.rpm
x86_64: spice-server-0.12.4-13.el6_8.2.x86_64.rpm spice-server-debuginfo-0.12.4-13.el6_8.2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
x86_64:

Read the Full Advisory


Advisory ID: RHSA-2017:0253-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0253.html
Issue date: 2017-02-06

Topic

An update for spice-server is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow DoS threat 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

1399566 - CVE-2016-9578 spice: Remote DoS via crafted message

1401603 - CVE-2016-9577 spice: Buffer overflow in main_channel_alloc_msg_rcv_buf when reading large messages

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