CVE-2016-2857 Denial of service in n/a
Local guest users can crash QEMU via crafted packet payload lengths, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-2857?
CVE-2016-2857 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 8 Apr 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-119
Which versions are affected by CVE-2016-2857?
It affects 11 products.
Linux distribution packages (20)
qemu-img Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-common Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-tools Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.3 |
qemu-img Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-common Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-tools Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.3 |
qemu-img Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-common Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-tools Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.3 |
qemu-img Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-common Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.3 |
qemu-kvm-tools Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.3 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Qemu Qemu, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server and 5 more.
How do I fix CVE-2016-2857?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-2857 being exploited?
There is no known exploitation of CVE-2016-2857 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2016-2857, GHSA-r736-2mvg-hchh, RHSA-2017:0083, UBUNTU-CVE-2016-2857.