Bug 1615637 (CVE-2018-15746)

Summary:	CVE-2018-15746 QEMU: seccomp: blacklist is not applied to all threads
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	amit, apevec, areis, berrange, cfergeau, chrisw, dwmw2, itamar, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lkundrak, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rbryant, rjones, robinlee.sysu, sclewis, security-response-team, slinaber, srevivo, tburke, tdecacqu, virt-maint, virt-maint, yduan
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:	2019-08-09 01:18:13 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:	1618356, 1618357, 1618358, 1618503, 1618504, 1622976, 1623283, 1623284, 1623285, 1623286, 1623287, 1623288
Bug Blocks:	1615621

Description Laura Pardo 2018-08-13 23:04:19 UTC

An issue was found in the way QEMU implements Seccomp sandboxing. In that, all QEMU threads are not bound by the sandbox. A guest user/process maybe be able to use this flaw to invoke prohibited system calls on a host, resulting in guest crash.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg04892.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2018/08/28/6
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg02289.html

Comment 1 Prasad Pandit 2018-08-16 13:23:45 UTC

Acknowledgments:

Name: Jann Horn (Google.com)

Comment 2 Prasad Pandit 2018-08-16 13:36:06 UTC

Created qemu tracking bugs for this issue:

Affects: epel-7 [bug 1618358]
Affects: fedora-all [bug 1618357]

Comment 11 errata-xmlrpc 2019-08-09 00:48:25 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 12 Product Security DevOps Team 2019-08-09 01:18:13 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-2018-15746

Comment 14 errata-xmlrpc 2020-09-29 19:44:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3906 https://access.redhat.com/errata/RHSA-2020:3906

Comment 15 errata-xmlrpc 2020-09-29 19:44:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3907 https://access.redhat.com/errata/RHSA-2020:3907

Comment 16 errata-xmlrpc 2020-09-29 19:46:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3907 https://access.redhat.com/errata/RHSA-2020:3907