| Name | CVE-2016-9603 |
| Description | A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-1035-1, DLA-1270-1, DLA-1497-1, DLA-939-1 |
| NVD severity | high (attack range: remote) |
| Debian Bugs | 857744 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| qemu (PTS) | jessie | 1:2.1+dfsg-12+deb8u6 | vulnerable |
| jessie (security) | 1:2.1+dfsg-12+deb8u7 | fixed | |
| stretch | 1:2.8+dfsg-6+deb9u4 | fixed | |
| stretch (security) | 1:2.8+dfsg-6+deb9u5 | fixed | |
| buster, sid | 1:2.12+dfsg-3 | fixed | |
| xen (PTS) | jessie | 4.4.1-9+deb8u10 | fixed |
| jessie (security) | 4.4.4lts4-0+deb8u1 | fixed | |
| stretch (security), stretch | 4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10 | fixed | |
| buster, sid | 4.11.1~pre.20180911.5acdd26fdc+dfsg-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| qemu | source | (unstable) | 1:2.8+dfsg-4 | high | 857744 | |
| qemu | source | jessie | 1:2.1+dfsg-12+deb8u7 | high | DLA-1497-1 | |
| qemu | source | wheezy | 1.1.2+dfsg-6+deb7u22 | high | DLA-1035-1 | |
| qemu-kvm | source | (unstable) | (unfixed) | high | ||
| qemu-kvm | source | wheezy | 1.1.2+dfsg-6+deb7u21 | high | DLA-939-1 | |
| xen | source | (unstable) | 4.4.0-1 | high | ||
| xen | source | wheezy | 4.1.6.lts1-12 | high | DLA-1270-1 |
Xen switched to qemu-system in 4.4.0-1
https://xenbits.xen.org/xsa/advisory-211.html
http://www.openwall.com/lists/oss-security/2017/03/14/2
Upstream patch http://git.qemu-project.org/?p=qemu.git;a=commit;h=50628d3479e4f9aa97e323506856e394fe7ad7a6