CVE-2016-3712

NameCVE-2016-3712
DescriptionInteger overflow in the VGA module in QEMU allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) by editing VGA registers in VBE mode.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-539-1, DLA-540-1, DLA-571-1, DSA-3573-1
NVD severitylow (attack range: local)
Debian Bugs823830

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)wheezy1.1.2+dfsg-6a+deb7u12vulnerable
wheezy (security)1.1.2+dfsg-6+deb7u24fixed
jessie (security), jessie1:2.1+dfsg-12+deb8u6fixed
stretch1:2.8+dfsg-6+deb9u2fixed
stretch (security)1:2.8+dfsg-6+deb9u3fixed
buster, sid1:2.10.0+dfsg-2fixed
qemu-kvm (PTS)wheezy1.1.2+dfsg-6+deb7u12vulnerable
wheezy (security)1.1.2+dfsg-6+deb7u24fixed
xen (PTS)wheezy4.1.4-3+deb7u9vulnerable
wheezy (security)4.1.6.lts1-10fixed
jessie4.4.1-9+deb8u9fixed
jessie (security)4.4.1-9+deb8u10fixed
buster, stretch (security), stretch, sid4.8.1-1+deb9u3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)1:2.6+dfsg-1low823830
qemusourcejessie1:2.1+dfsg-12+deb8u6lowDSA-3573-1
qemusourcewheezy1.1.2+dfsg-6a+deb7u13lowDLA-540-1
qemu-kvmsource(unstable)(unfixed)low
qemu-kvmsourcewheezy1.1.2+dfsg-6+deb7u13lowDLA-539-1
xensource(unstable)4.4.0-1low
xensourcewheezy4.1.6.lts1-1lowDLA-571-1

Notes

[wheezy] - xen <no-dsa> (default configuration not vulnerable)
Xen switched to qemu-system in 4.4.0-1
http://xenbits.xen.org/xsa/advisory-179.html
mitigation: run HVM in stubdomains, PV, default video card not vulnerable, i386-only

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