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Alerts This Week
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Alerts This Week
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RHEL 7: RHSA-2016-1205-02 Critical: Spice Buffer Overflow Vulnerability

red hat
Calendar Grey June 6, 2016
Scroller Redhat
Ubuntu has issued a security notice for libjpeg in 20.04 LTS, tackling critical memory corruption and buffer overflow vulnerabilities.
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

Applications acting as a SPICE server must be restarted for this update to take effect. Note that QEMU-KVM guests providing SPICE console access 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 memory allocation flaw, leading to a heap-based buffer overflow, was found in spice's smartcard interaction, which runs under the QEMU-KVM context on the host. A user connecting to a guest VM using spice could potentially use this flaw to crash the QEMU-KVM process or execute arbitrary code with the privileges of the host's QEMU-KVM process. (CVE-2016-0749)
* A memory access flaw was found in the way spice handled certain guests using crafted primary surface parameters. A user in a guest could use this flaw to read from and write to arbitrary memory locations on the host. (CVE-2016-2150)
The CVE-2016-0749 issue was discovered by Jing Zhao (Red Hat) and the CVE-2016-2150 issue was discovered by Frediano Ziglio (Red Hat).

Topics%20covered

Topics Covered

security advisory buffer overflow important memory access RHEL 7 spice

References

https://access.redhat.com/security/cve/CVE-2016-0749 https://access.redhat.com/security/cve/CVE-2016-2150 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: spice-0.12.4-15.el7_2.1.src.rpm
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-devel-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: spice-0.12.4-15.el7_2.1.src.rpm
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-0.12.4-15.el7_2.1.x86_64.rpm spice-server-devel-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: spice-0.12.4-15.el7_2.1.src.rpm
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-devel-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: spice-0.12.4-15.el7_2.1.src.rpm
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-0.12.4-15.el7_2.1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: spice-debuginfo-0.12.4-15.el7_2.1.x86_64.rpm spice-server-devel-0.12.4-15.el7_2.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:1205-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1205
Issue date: 2016-06-06

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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory buffer overflow important memory access RHEL 7 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

1300646 - CVE-2016-0749 spice: heap-based memory corruption within smartcard handling

1313496 - CVE-2016-2150 spice: Host memory access from guest with invalid primary surface parameters

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