CVE-2017-15119

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.

Category

5.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.07% Top 15%
Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com
Affected: QEMU qemu
Published at:
Updated at:

References

Link Tags
https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.html third party advisory mailing list
http://www.openwall.com/lists/oss-security/2017/11/28/9 patch mailing list third party advisory
http://www.securityfocus.com/bid/102011 third party advisory vdb entry
https://www.debian.org/security/2018/dsa-4213 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15119 patch third party advisory issue tracking
https://access.redhat.com/errata/RHSA-2018:1104 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1113 third party advisory vendor advisory
https://usn.ubuntu.com/3575-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-15119?
CVE-2017-15119 has been scored as a medium severity vulnerability.
How to fix CVE-2017-15119?
To fix CVE-2017-15119, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-15119 being actively exploited in the wild?
It is possible that CVE-2017-15119 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-15119?
CVE-2017-15119 affects QEMU qemu.
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