Bug 1586245 (CVE-2018-11806)

Summary:	CVE-2018-11806 QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	ailan, amit, apevec, areis, berrange, cfergeau, chrisw, drjones, dwmw2, imammedo, itamar, jasowang, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, slinaber, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A heap buffer overflow issue was found in the way SLiRP networking back-end in QEMU processes fragmented packets. It could occur while reassembling the fragmented datagrams of an incoming packet. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or potentially leverage it to execute arbitrary code on the host with privileges of the QEMU process.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:27:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1586247, 1586248, 1586249, 1586250, 1586251, 1586252, 1586253, 1586254, 1586255, 1586256, 1586257, 1586258, 1586259, 1586260, 1586292
Bug Blocks:	1572638

Description Prasad Pandit 2018-06-05 19:58:56 UTC

A heap buffer overflow issue was found in the way Slirp networking back-end
in QEMU processes fragmented packets. It could occur while reassembling the
fragmented datagrams of an incoming packet.

A privileged user/process inside guest could use this flaw to crash the QEMU
process resulting in DoS OR potentially leverage it to execute arbitrary code
on the host with privileges of the QEMU process.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2018/06/07/1

Comment 1 Prasad Pandit 2018-06-05 19:59:23 UTC

Acknowledgments:

Name: Jskz - Zero Day Initiative (trendmicro.com)

Comment 2 Prasad Pandit 2018-06-05 20:02:46 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1586249]

Comment 6 errata-xmlrpc 2018-08-16 14:17:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2462 https://access.redhat.com/errata/RHSA-2018:2462

Comment 7 errata-xmlrpc 2018-09-25 19:06:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:2762 https://access.redhat.com/errata/RHSA-2018:2762

Comment 8 errata-xmlrpc 2018-09-27 18:16:40 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 12.0 (Pike)
  Red Hat OpenStack Platform 8.0 (Liberty)
  Red Hat OpenStack Platform 9.0 (Mitaka)
  Red Hat OpenStack Platform 13.0 (Queens)

Via RHSA-2018:2822 https://access.redhat.com/errata/RHSA-2018:2822

Comment 9 errata-xmlrpc 2018-10-09 11:04:22 UTC

This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

Via RHSA-2018:2887 https://access.redhat.com/errata/RHSA-2018:2887

Comment 10 errata-xmlrpc 2019-09-24 13:32:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:2892 https://access.redhat.com/errata/RHSA-2019:2892