Debian Security Advisory
DLA-573-1 qemu -- LTS security update
- Date Reported:
- 30 Jul 2016
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2015-5239, CVE-2016-2857, CVE-2016-4020, CVE-2016-4439, CVE-2016-5403, CVE-2016-6351.
- More information:
Multiple vulnerabilities have been discovered in QEMU, a fast processor emulator. The Common Vulnerabilities and Exposures project identifies the following problems:
Lian Yihan discovered that QEMU incorrectly handled certain payload messages in the VNC display driver. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service.
Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An 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.
Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged attacker inside the guest could use this issue to possibly leak host memory bytes.
Li Qiang disovered that the emulation of the 53C9X Fast SCSI Controller is affected by out of bound access issues.
Zhenhao Hong discovered that a malicious guest administrator can cause unbounded memory allocation in QEMU (which can cause an Out-of-Memory condition) by submitting virtio requests without bothering to wait for completion.
For Debian 7
Wheezy, these problems have been fixed in version 1.1.2+dfsg-6+deb7u14.
We recommend that you upgrade your qemu packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS