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List:       oss-security
Subject:    [oss-security] CVE-2017-15119 Qemu: DoS via large option request
From:       P J P <ppandit () redhat ! com>
Date:       2017-11-28 18:14:37
Message-ID: nycvar.YSQ.7.76.1711282327100.6216 () wniryva
[Download RAW message or body]

   Hello,

Quick Emulator(Qemu) built with the Network Block Device(NBD) server support 
is vulnerable to a denial-of-service issue. It could occur if a client sent 
large option requests, making server waste CPU time on reading up to 4G bytes.

A client could use this flaw to keep the NBD server from serving other 
requests, resulting in DoS.

Upstream patch:
---------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1516925

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
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