Bug 623016 (CVE-2017-10664)

Summary:	<app-emulation/qemu-2.9.0-r56: qemu-nbd: server breaks with SIGPIPE upon client abort
Product:	Gentoo Security	Reporter:	Kristian Fiskerstrand (RETIRED) <k_f>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	qemu+disabled
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://www.openwall.com/lists/oss-security/2017/06/29/1
Whiteboard:	B3 [noglsa cve]
Package list:		Runtime testing required:	---
Bug Depends on:	625614
Bug Blocks:

Description Kristian Fiskerstrand (RETIRED) gentoo-dev

2017-06-29 09:45:46 UTC

From $URL:
  Hello,

Quick Emulator(Qemu) built with the Network Block Device(NBD) Server support is vulnerable to a crash via SIGPIPE signal. It could occur if a client aborts connection due to any failure during negotiation.

A remote user/process could use this flaw to crash the qemu-nbd server resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg02693.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1466190

Comment 1 Matthias Maier gentoo-dev

2017-07-26 18:58:39 UTC

commit 606c4d5b81243fb243bd38a21326e60c3318138c (HEAD -> master, origin/master, origin/HEAD)
Author: Matthias Maier <tamiko@gentoo.org>
Date:   Wed Jul 26 13:53:25 2017 -0500

    app-emulation/qemu: security patches
    
     CVE-2017-7539,  bug #625850
     CVE-2017-10664, bug #623016
     CVE-2017-10806, bug #624088
    
    Package-Manager: Portage-2.3.6, Repoman-2.3.3