CVE-2016-3710

NameCVE-2016-3710
DescriptionThe VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-539-1, DLA-540-1, DLA-571-1, DSA-3573-1
NVD severityhigh
Debian Bugs823830

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u8fixed
stretch (security)1:2.8+dfsg-6+deb9u9fixed
buster, buster (security)1:3.1+dfsg-8+deb10u5fixed
bullseye, sid1:5.0-6fixed
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster4.11.3+24-g14b62ab3e5-1~deb10u1fixed
buster (security)4.11.4+24-gddaaccbbab-1~deb10u1fixed
bullseye, sid4.11.4+24-gddaaccbbab-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)1:2.6+dfsg-1823830
qemusourcejessie1:2.1+dfsg-12+deb8u6DSA-3573-1
qemusourcewheezy1.1.2+dfsg-6a+deb7u13DLA-540-1
qemu-kvmsource(unstable)(unfixed)
qemu-kvmsourcewheezy1.1.2+dfsg-6+deb7u13DLA-539-1
xensource(unstable)4.4.0-1
xensourcewheezy4.1.6.lts1-1DLA-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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