| Name | CVE-2017-15124 |
| Description | VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4213-1 |
| Debian Bugs | 884806 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | jessie, jessie (lts) | 1:2.1+dfsg-12+deb8u23 | vulnerable |
| stretch (security) | 1:2.8+dfsg-6+deb9u17 | fixed |
| stretch (lts), stretch | 1:2.8+dfsg-6+deb9u19 | fixed |
| buster (security), buster, buster (lts) | 1:3.1+dfsg-8+deb10u12 | fixed |
| bullseye | 1:5.2+dfsg-11+deb11u3 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| bookworm | 1:7.2+dfsg-7+deb12u7 | fixed |
| sid, trixie | 1:9.2.0+ds-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | stretch | 1:2.8+dfsg-6+deb9u4 | | DSA-4213-1 | |
| qemu | source | (unstable) | 1:2.12~rc3+dfsg-1 | | | 884806 |
| qemu-kvm | source | (unstable) | (unfixed) | | | |
Notes
[jessie] - qemu <ignored> (invasive patch, also builds on 2.5 socket refactoring, tentative backport crashes, no other distro fix for 2.1)
[wheezy] - qemu <postponed> (Can be fixed along in later update)
[wheezy] - qemu-kvm <postponed> (Can be fixed along in later update)
https://www.openwall.com/lists/oss-security/2017/12/19/4
https://lists.gnu.org/archive/html/qemu-devel/2017-12/msg03705.html
https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg00796.html