Bug 1581013 (CVE-2018-10839)

Summary:	CVE-2018-10839 QEMU: ne2000: integer overflow leads to buffer overflow issue
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ailan, amit, apevec, areis, berrange, cfergeau, chrisw, daniel, drjones, dwmw2, imammedo, itamar, jasowang, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lpardo, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, security-response-team, sfowler, slinaber, srevivo, tdecacqu, tohidi.arash, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	An integer overflow issue was found in the NE200 NIC emulation. It could occur while receiving packets from the network, if the size value was greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting in DoS scenario.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-09-24 18:45:36 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:	1636413, 1636414, 1636415, 1636416, 1636417, 1636418, 1636419, 1636420, 1636421, 1636422, 1636428, 1636429, 1636430, 1793214
Bug Blocks:	1581014, 1613563

Description Sam Fowler 2018-05-22 01:02:31 UTC

Qemu emulator built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network.

A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03273.html

Reference:
----------
  -> https://www.openwall.com/lists/oss-security/2018/10/08/1

Comment 3 Sam Fowler 2018-07-25 01:28:53 UTC

Acknowledgments:

Name: Daniel Shapira (Twistlock), Arash Tohidi

Comment 6 Prasad Pandit 2018-10-05 11:11:58 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1636429]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1636428]

Comment 8 Prasad Pandit 2018-10-08 04:35:15 UTC

*** Bug 1613562 has been marked as a duplicate of this bug. ***

Comment 9 errata-xmlrpc 2019-09-24 13:32:19 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

Comment 10 Product Security DevOps Team 2019-09-24 18:45:36 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-10839