Debian Security Advisory
DLA-1781-1 qemu -- LTS security update
- Date Reported:
- 09 May 2019
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 901017, Bug 912535.
In Mitre's CVE dictionary: CVE-2018-11806, CVE-2018-18849, CVE-2018-20815, CVE-2019-9824.
- More information:
Several vulnerabilities were found in QEMU, a fast processor emulator:
It was found that the SLiRP networking implementation could use a wrong size when reallocating its buffers, which can be exploited by a priviledged user on a guest to cause denial of service or possibly arbitrary code execution on the host system.
It was found that the LSI53C895A SCSI Host Bus Adapter emulation was susceptible to an out of bounds memory access, which could be leveraged by a malicious guest user to crash the QEMU process.
A heap buffer overflow was found in the load_device_tree function, which could be used by a malicious user to potentially execute arbitrary code with the priviledges of the QEMU process.
William Bowling discovered that the SLiRP networking implementation did not handle some messages properly, which could be triggered to leak memory via crafted messages.
For Debian 8
Jessie, these problems have been fixed in version 1:2.1+dfsg-12+deb8u11.
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