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CVE-2016-2857

Status Candidate

Overview

The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.

Related Files

Red Hat Security Advisory 2017-0350-01
Posted Mar 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0350-01 - 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 support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.

tags | advisory, arbitrary
systems | linux, redhat
advisories | CVE-2016-2857, CVE-2017-2615, CVE-2017-2620
MD5 | 4c24f6985cfd3b66cf056a2d6a031979
Red Hat Security Advisory 2017-0344-01
Posted Feb 28, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0344-01 - 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 support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the Qemu process resulting in DoS or potentially execute arbitrary code on the host with privileges of Qemu process on the host.

tags | advisory, arbitrary
systems | linux, redhat
advisories | CVE-2016-2857, CVE-2017-2615
MD5 | 396d955098aff15e81e0f0d06fb2d0f7
Red Hat Security Advisory 2017-0334-01
Posted Feb 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0334-01 - 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 support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.

tags | advisory, arbitrary
systems | linux, redhat
advisories | CVE-2016-2857, CVE-2017-2615, CVE-2017-2620
MD5 | 4bbd6bd09c3b246f482fc2b62926418e
Red Hat Security Advisory 2017-0309-01
Posted Feb 24, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0309-01 - 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: Quick emulator built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the Qemu process resulting in DoS or potentially execute arbitrary code on the host with privileges of Qemu process on the host.

tags | advisory, arbitrary, kernel
systems | linux, redhat
advisories | CVE-2016-2857, CVE-2017-2615
MD5 | 3df515e8472acc30e488c00196065520
Red Hat Security Advisory 2017-0083-01
Posted Jan 18, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0083-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM. Security Fix: An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user inside a guest could use this flaw to crash the QEMU process.

tags | advisory, kernel, udp, tcp
systems | linux, redhat
advisories | CVE-2016-2857
MD5 | d1a919a428bdfe7e98f8acfb538b52ca
Ubuntu Security Notice USN-2974-1
Posted May 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2974-1 - Zuozhi Fzz discovered that QEMU incorrectly handled USB OHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-2391, CVE-2016-2392, CVE-2016-2538, CVE-2016-2841, CVE-2016-2857, CVE-2016-2858, CVE-2016-3710, CVE-2016-3712, CVE-2016-4001, CVE-2016-4002, CVE-2016-4020, CVE-2016-4037
MD5 | c2708302081e86ba5d1224f981e5cb22
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