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CVE-2017-15119

Published: 28 November 2017

The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.

Notes

AuthorNote
mdeslaur
trusty already has a length check there

Priority

Medium

Cvss 3 Severity Score

8.6

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
artful
Released (1:2.10+dfsg-0ubuntu3.5)
trusty Not vulnerable

upstream
Released (2.11)
xenial
Released (1:2.5+dfsg-5ubuntu10.22)
zesty Ignored
(end of life)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=fdad35ef6c5839d50dfc14073364ac893afebc30
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 8.6
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H