Bug 1528396 – CVE-2018-5748 libvirt: Resource exhaustion via qemuMonitorIORead() method

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Bug 1528396 - (CVE-2018-5748) CVE-2018-5748 libvirt: Resource exhaustion via qemuMonitorIORead() method

Summary:	CVE-2018-5748 libvirt: Resource exhaustion via qemuMonitorIORead() method

Status:	CLOSED ERRATA

Aliases:	CVE-2018-5748

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180116,reported=2...
Keywords:	Reopened, Security

Depends On:	1535785 1550979 1550980 1566978
Blocks:	1528397
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Reported:	2017-12-21 13:34 EST by Pedro Sampaio
Modified:	2018-10-24 04:58 EDT (History)
CC List:	18 users (show)

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Last Closed:	2018-10-24 04:58:14 EDT
Type:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:1396	None	None	None	2018-05-14 12:11 EDT
Red Hat Product Errata	RHSA-2018:1929	None	None	None	2018-06-19 00:56 EDT

Groups: None (edit)

Description Pedro Sampaio 2017-12-21 13:34:15 EST

A flaw was found in Qemu. A lack of restriction for the amount of data read by QEMU Monitor socket can lead to denial of service by exhaustion of memory resources.

References:

https://www.redhat.com/archives/libvir-list/2017-December/msg00749.html

Comment 1 Pedro Sampaio 2017-12-21 13:34:29 EST

Acknowledgments:

Name: Daniel P. Berrange (Red Hat), Peter Krempa (Red Hat)

Comment 2 Prasad J Pandit 2018-01-18 01:05:43 EST

Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 1535785]

Comment 3 Cedric Buissart 2018-01-24 09:36:48 EST

Although RHES-3 (RHGS) is shipped with libvirt, it does not use Qemu. As such, there is no qemu process running, and no vulnerable monitor socket created.

Comment 4 Fedora Update System 2018-03-01 11:23:28 EST

libvirt-3.7.0-4.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 errata-xmlrpc 2018-05-14 12:11:22 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:1396 https://access.redhat.com/errata/RHSA-2018:1396

Comment 7 errata-xmlrpc 2018-06-19 00:55:50 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1929 https://access.redhat.com/errata/RHSA-2018:1929

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