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CVE-2017-15124

Published: 9 January 2018

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.

Notes

AuthorNote
mdeslaur
complex backport, not going to fix this in xenial and earlier

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
artful
Released (1:2.10+dfsg-0ubuntu3.5)
trusty Ignored

upstream Needs triage

xenial Ignored

zesty Ignored
(end of life)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=e2b72cb6e0443d90d7ab037858cb6834b6cca852
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=ada8d2e4369ea49677d8672ac81bce73eefd5b54
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=f887cf165db20f405cb8805c716bd363aaadf815
qemu-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H