Bug 1678515 (CVE-2019-9824)

Summary:	CVE-2019-9824 QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit, areis, berrange, cfergeau, dbecker, drjones, dwmw2, imammedo, itamar, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rjones, rkrcmar, robinlee.sysu, sclewis, security-response-team, slinaber, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-12 13:06:41 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:	1689790, 1689791, 1689792, 1689793, 1689794, 1689821, 1689822, 1689823, 1689824, 1689825, 1690720
Bug Blocks:	1678516

Description Pedro Sampaio 2019-02-19 01:02:45 UTC

An information leak issue was found in the SLiRP networking implementation of the QEMU emulator. It occurs in tcp_emu() routine while emulating
Identification protocol and crafted/malformed messages are sent making it return uninitialized variables.

A user/process could use this flaw to read uninitialised stack memory contents from the QEMU process resulting in information leakage.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg01871.html

Reference:
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  -> https://www.openwall.com/lists/oss-security/2019/03/18/1

Comment 2 Prasad Pandit 2019-03-14 11:29:25 UTC

Acknowledgments:

Name: William Bowling

Comment 3 Prasad Pandit 2019-03-18 06:54:08 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1689794]

Comment 10 errata-xmlrpc 2019-07-02 11:44:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:1650 https://access.redhat.com/errata/RHSA-2019:1650

Comment 11 Product Security DevOps Team 2019-07-12 13:06:41 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-2019-9824

Comment 15 errata-xmlrpc 2019-08-06 12:10:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2078 https://access.redhat.com/errata/RHSA-2019:2078

Comment 16 errata-xmlrpc 2019-08-09 00:48:31 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 17 errata-xmlrpc 2019-08-22 09:18:40 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

Comment 19 errata-xmlrpc 2019-11-05 20:39:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3345 https://access.redhat.com/errata/RHSA-2019:3345