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CVE-2016-9603

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2017-1441-01
Posted Jun 14, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1441-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; 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.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
MD5 | 85b80cc53097853f88e198a67f050a5b
Gentoo Linux Security Advisory 201706-03
Posted Jun 6, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201706-3 - Multiple vulnerabilities have been found in QEMU, the worst of which may allow a remote attacker to cause a Denial of Service or gain elevated privileges from a guest VM. Versions less than 2.9.0-r2 are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2016-9603, CVE-2017-7377, CVE-2017-7471, CVE-2017-7493, CVE-2017-7718, CVE-2017-7980, CVE-2017-8086, CVE-2017-8112, CVE-2017-8309, CVE-2017-8379, CVE-2017-8380, CVE-2017-9060, CVE-2017-9310, CVE-2017-9330
MD5 | 8fed197672d9b924dba0615240e3f96b
Red Hat Security Advisory 2017-1206-01
Posted May 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1206-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix: A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; 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.

tags | advisory, overflow, arbitrary, kernel
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
MD5 | 54bdd32f200ad9078d2fc5c08d01724d
Red Hat Security Advisory 2017-1205-01
Posted May 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1205-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; 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.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
MD5 | 0df480974dac7b71d873a004e4e3978c
Ubuntu Security Notice USN-3268-1
Posted Apr 25, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3268-1 - Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. It was discovered that QEMU incorrectly handled the JAZZ RC4030 device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Jann Horn discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside the guest could use this issue to access files on the host file system outside of the shared directory and possibly escalate their privileges. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-10028, CVE-2016-8667, CVE-2016-9602, CVE-2016-9603, CVE-2016-9908, CVE-2016-9912, CVE-2016-9914, CVE-2017-5552, CVE-2017-5578, CVE-2017-5987, CVE-2017-6505
MD5 | b3ac75a6d47394f88d2460f8be9f50ed
Ubuntu Security Notice USN-3261-1
Posted Apr 20, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3261-1 - Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-10028, CVE-2016-10029, CVE-2016-10155, CVE-2016-7907, CVE-2016-8667, CVE-2016-8669, CVE-2016-9381, CVE-2016-9602, CVE-2016-9603, CVE-2016-9776, CVE-2016-9845, CVE-2016-9846, CVE-2016-9907, CVE-2016-9908, CVE-2016-9911, CVE-2016-9912, CVE-2016-9913, CVE-2016-9914, CVE-2016-9915, CVE-2016-9916, CVE-2016-9921, CVE-2016-9922, CVE-2017-2615, CVE-2017-2620, CVE-2017-2633, CVE-2017-5525, CVE-2017-5526, CVE-2017-5552
MD5 | 915cb728441d7f074c130ac020c5589b
Red Hat Security Advisory 2017-0988-01
Posted Apr 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0988-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 7438d75d09213a841e69c5491e5e6d7b
Red Hat Security Advisory 2017-0987-01
Posted Apr 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0987-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix: A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; 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.

tags | advisory, overflow, arbitrary, kernel
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 7cb2388ce1e9408e158e055f6e7ecd2c
Red Hat Security Advisory 2017-0985-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0985-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev packages provide the user-space component for running virtual machines using KVM in environments managed by Red Hat Virtualization Manager. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | f2783babfb1fbbfdc482ec1acff6b20f
Red Hat Security Advisory 2017-0984-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0984-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 3dffaf3dc1eda6e057201f31be1724ce
Red Hat Security Advisory 2017-0983-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0983-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 808105abd600a1b3b89b79452158ab9b
Red Hat Security Advisory 2017-0980-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0980-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 811796c5621e7acfe7088feaa04a6672
Red Hat Security Advisory 2017-0981-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0981-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 0be9d3ea725359fe4888890067b3b9f8
Red Hat Security Advisory 2017-0982-01
Posted Apr 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0982-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: Quick Emulator, built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support, is vulnerable to a heap buffer overflow issue. The issue could occur when a VNC client attempts to update its display after a VGA operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or, potentially, leverage it to execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603
MD5 | 93d96321bfb7c8fa65770d9f7fc74e08
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