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Red Hat 7: RHSA-2017-0254-01 Moderate: Spice DoS and Heap Overflow

red hat
Calendar Grey February 6, 2017
Scroller Redhat
Red Hat announces critical patch for spice addressing denial of service and memory overflow flaws.
An update for spice is now available for Red Hat Enterprise Linux 7

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 system built for virtual environments which allows the user to view a computing 'desktop' environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures.
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 moderate red hat software update DoS remote execution spice

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 Client (v. 7):
Source: spice-0.12.4-20.el7_3.src.rpm
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-devel-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: spice-0.12.4-20.el7_3.src.rpm
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-0.12.4-20.el7_3.x86_64.rpm spice-server-devel-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: spice-0.12.4-20.el7_3.src.rpm
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-devel-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: spice-0.12.4-20.el7_3.src.rpm
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-0.12.4-20.el7_3.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-20.el7_3.x86_64.rpm spice-server-devel-0.12.4-20.el7_3.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

Read the Full Advisory


Advisory ID: RHSA-2017:0254-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0254.html
Issue date: 2017-02-06

Topic

An update for spice is now available for Red Hat Enterprise Linux 7.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 moderate red hat software update DoS remote execution spice

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 Server (v. 7) - x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - 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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