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.

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

Details

Risk Information

CVSS v2

CVSS v3