critical
9.9
CWE
119 122
Advisory Published
CVE Published
Updated

CVE-2016-9603: Buffer Overflow

First published: Tue Mar 07 2017(Updated: )

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/qemu<2.9
2.9
QEMU<2.9.0
XenServer=6.0.2
XenServer=6.2.0-sp1
XenServer=6.5-sp1
XenServer=7.0
XenServer=7.1
Red Hat OpenStack for IBM Power=5.0
Red Hat OpenStack for IBM Power=6.0
Red Hat OpenStack for IBM Power=7.0
Red Hat OpenStack for IBM Power=8
Red Hat OpenStack for IBM Power=9
Red Hat OpenStack for IBM Power=10
Debian Linux=7.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.5
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-9603?

    CVE-2016-9603 is classified as a high severity vulnerability due to the potential for remote code execution via a heap buffer overflow.

  • How do I fix CVE-2016-9603?

    To fix CVE-2016-9603, upgrade QEMU to version 2.9 or later.

  • Which software is affected by CVE-2016-9603?

    CVE-2016-9603 affects multiple versions of QEMU, Citrix XenServer, and Red Hat OpenStack among others.

  • Can CVE-2016-9603 be exploited remotely?

    Yes, CVE-2016-9603 can be exploited remotely if a privileged user on a guest machine uses a VNC client to interact with the vulnerable VNC display driver.

  • What are the potential consequences of exploiting CVE-2016-9603?

    Exploiting CVE-2016-9603 could allow an attacker to execute arbitrary code on the guest system, compromising its integrity.

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