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AUSCERT External Security Bulletin Redistribution
ESB-2019.1639
[DLA 1781-1] qemu security update
10 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: qemu
Publisher: Debian
Operating System: Debian GNU/Linux 8
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-9824 CVE-2018-20815 CVE-2018-18849
CVE-2018-11806
Reference: ESB-2019.1244
ESB-2019.1098.3
ESB-2018.3670
ESB-2018.2969
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2019/05/msg00010.html
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Package : qemu
Version : 1:2.1+dfsg-12+deb8u11
CVE ID : CVE-2018-11806 CVE-2018-18849 CVE-2018-20815 CVE-2019-9824
Debian Bug : 901017 912535
Several vulnerabilities were found in QEMU, a fast processor emulator:
CVE-2018-11806
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.
CVE-2018-18849
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.
CVE-2018-20815
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.
CVE-2019-9824
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
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