CVE-2017-9524 Null dereference in n/a
Remote attackers can crash the QEMU NBD server via a segmentation fault due to improper initialization order, requiring NBD support to be enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-9524?
CVE-2017-9524 is a high-severity vulnerability in Debian Debian Linux, published on 6 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
Weakness: CWE-20
Which versions are affected by CVE-2017-9524?
It affects 2 products.
Linux distribution packages (25)
qemu-img Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-common Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-tools Red Hat:enterprise_linux:7::client | All versions | 10:1.5.3-126.el7_3.10 |
qemu-img Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-common Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-tools Red Hat:enterprise_linux:7::computenode | All versions | 10:1.5.3-126.el7_3.10 |
qemu-img-rhev Red Hat:enterprise_linux:7::hypervisor | All versions | 10:2.6.0-28.el7_3.12 |
qemu-kvm-common-rhev Red Hat:enterprise_linux:7::hypervisor | All versions | 10:2.6.0-28.el7_3.12 |
qemu-kvm-rhev Red Hat:enterprise_linux:7::hypervisor | All versions | 10:2.6.0-28.el7_3.12 |
qemu-kvm-rhev-debuginfo Red Hat:enterprise_linux:7::hypervisor | All versions | 10:2.6.0-28.el7_3.12 |
qemu-kvm-tools-rhev Red Hat:enterprise_linux:7::hypervisor | All versions | 10:2.6.0-28.el7_3.12 |
qemu-img Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-common Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-tools Red Hat:enterprise_linux:7::server | All versions | 10:1.5.3-126.el7_3.10 |
qemu-img Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-common Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.10 |
qemu-kvm-tools Red Hat:enterprise_linux:7::workstation | All versions | 10:1.5.3-126.el7_3.10 |
Products include Debian Debian Linux, Qemu Qemu.
How do I fix CVE-2017-9524?
Apply the vendor's patch.
Is CVE-2017-9524 being exploited?
There is no known exploitation of CVE-2017-9524 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-9524, GHSA-3hp7-3fxw-3v9g, RHSA-2017:1681, RHSA-2017:1682.