Bug 1427833 (CVE-2017-6414)

Summary:	CVE-2017-6414 Qemu: libcacard: host memory leakage while creating new APDU
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
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, apevec, areis, ayoung, chrisw, cvsbot-xmlrpc, drjones, fidencio, hdegoede, imammedo, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, marcandre.lureau, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rkrcmar, sclewis, srevivo, tdecacqu, 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:	2019-06-08 03:08:14 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:	1427834, 1476037, 1476049, 1476068, 1476069, 1476072, 1476074, 1476077
Bug Blocks:	1425098, 1476084

Description Prasad Pandit 2017-03-01 11:05:34 UTC

The CAC(Common Access Card) library, used by Quick Emulator(Qemu) to implement
smartcard support, is vulnerable to a host memory leakage issue. It could occur
while allocating a new APDU object using guest supplied raw byte stream in
'vcard_apdu_new'.

A guest user/process could use this flaw to leak host memory resulting in DoS.

Upstream patch:
---------------
  -> https://cgit.freedesktop.org/spice/libcacard/commit/?id=9113dc6a303604a2d9812ac70c17d076ef11886c

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/03/01/11

Comment 1 Prasad Pandit 2017-03-01 11:05:39 UTC

Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2017-03-01 11:06:37 UTC

Created libcacard tracking bugs for this issue:

Affects: fedora-all [bug 1427834]

Comment 3 Garth Mollett 2017-07-27 22:16:07 UTC

Created libcacard tracking bugs for this issue:

Affects: fedora-all [bug 1476037]

Comment 5 errata-xmlrpc 2017-08-02 01:00:10 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 11.0 (Ocata)
  Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
  Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
  Red Hat OpenStack Platform 8.0 (Liberty)
  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:2408 https://access.redhat.com/errata/RHSA-2017:2408