Vulnerability CVE-2017-15119
Published: 2018-07-27

Description:
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.

Type:

CWE-400

 (Uncontrolled Resource Consumption ('Resource Exhaustion'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Redhat -> Virtualization 
QEMU -> QEMU 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://www.openwall.com/lists/oss-security/2017/11/28/9
http://www.securityfocus.com/bid/102011
https://access.redhat.com/errata/RHSA-2018:1104
https://access.redhat.com/errata/RHSA-2018:1113
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15119
https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.html
https://usn.ubuntu.com/3575-1/
https://www.debian.org/security/2018/dsa-4213
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