Bug 1636712 (CVE-2018-17958)

Summary:	CVE-2018-17958 QEMU: rtl8139: integer overflow leads to buffer overflow
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amit, apevec, areis, berrange, cfergeau, chrisw, dwmw2, itamar, jasowang, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rbryant, rjones, robinlee.sysu, sclewis, slinaber, tdecacqu, tohidi.arash, virt-maint, virt-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 RTL8139 NIC emulation in QEMU. It could occur while receiving packets over the network if the size value is 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:	2019-08-09 01:18:18 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:	1636726, 1636727, 1636728, 1636729, 1636730, 1636731, 1636732, 1636733, 1636734, 1636735, 1636736, 1636738, 1636780
Bug Blocks:	1581014

Description Prasad Pandit 2018-10-07 07:06:17 UTC

Qemu emulator built with the RTL8139 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/msg03269.html

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

Comment 1 Prasad Pandit 2018-10-07 07:06:41 UTC

Acknowledgments:

Name: Daniel Shapira (Twistlock), Arash Tohidi

Comment 2 Prasad Pandit 2018-10-07 09:30:05 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1636729]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1636730]

Comment 7 errata-xmlrpc 2019-08-09 00:48:26 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 13.0 (Queens)
  Red Hat OpenStack Platform 14.0 (Rocky)

Via RHSA-2019:2425 https://access.redhat.com/errata/RHSA-2019:2425

Comment 8 Product Security DevOps Team 2019-08-09 01:18:18 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-2018-17958

Comment 9 errata-xmlrpc 2019-08-22 09:18:25 UTC

This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
  Red Hat Virtualization Engine 4.3

Via RHSA-2019:2553 https://access.redhat.com/errata/RHSA-2019:2553