CVE-2017-17051

Name	CVE-2017-17051
Description	An issue was discovered in the default FilterScheduler in OpenStack Nova 16.0.3. By repeatedly rebuilding an instance with new images, an authenticated user may consume untracked resources on a hypervisor host leading to a denial of service, aka doubled resource allocations. This regression was introduced with the fix for OSSA-2017-005 (CVE-2017-16239); however, only Nova stable/pike or later deployments with that fix applied and relying on the default FilterScheduler are affected.
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)
NVD severity	medium
Debian Bugs	883621

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nova (PTS)	stretch (security), stretch	2:14.0.0-4+deb9u1	fixed
	buster	2:18.1.0-6	fixed
	bullseye, sid	2:22.0.0-2	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
nova	source	wheezy	(not affected)
nova	source	jessie	(not affected)
nova	source	stretch	(not affected)
nova	source	(unstable)	2:16.0.3-6	883621

Notes

[stretch] - nova <not-affected> (Fix for CVE-2017-16239 not applied and not affecting 14.x.y)
[jessie] - nova <not-affected> (Vulnerable code not present)
[wheezy] - nova <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2017/12/05/5
https://launchpad.net/bugs/1732976