CVE-2017-2620

NameCVE-2017-2620
DescriptionQuick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
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-1270-1, DLA-1497-1, DLA-842-1, DLA-845-1
NVD severityhigh
Debian Bugs855791

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9fixed
stretch (security)1:2.8+dfsg-6+deb9u14fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8fixed
bullseye, sid1:5.2+dfsg-9fixed
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster4.11.4+57-g41a822c392-2fixed
buster (security)4.11.4+99-g8bce4698f6-1fixed
bullseye, sid4.14.1+11-gb0b734a8b3-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcewheezy1.1.2+dfsg-6+deb7u20DLA-845-1
qemusourcejessie1:2.1+dfsg-12+deb8u7DLA-1497-1
qemusource(unstable)1:2.8+dfsg-3855791
qemu-kvmsourcewheezy1.1.2+dfsg-6+deb7u20DLA-842-1
qemu-kvmsource(unstable)(unfixed)
xensourcewheezy4.1.6.lts1-12DLA-1270-1
xensource(unstable)4.4.0-1

Notes

Xen switched to qemu-system in 4.4.0-1
https://xenbits.xen.org/xsa/advisory-209.html
Qemu upstream patch: https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html

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