Bug 1782955 (CVE-2019-19481)

Summary:	CVE-2019-19481 opensc: Improper handling of buffer limits for CAC certificates
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	crypto-team, gmazyland, jjelen, klember, nmavrogi, tmraz
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	opensc 0.20.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-04 02:23:42 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:	1782956, 1782957, 1791807, 1791808
Bug Blocks:	1782958

Description Guilherme de Almeida Suckevicz 2019-12-12 17:15:22 UTC

An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.

Reference:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618

Upstream commit:
https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278

Comment 1 Guilherme de Almeida Suckevicz 2019-12-12 17:15:43 UTC

Created opensc tracking bugs for this issue:

Affects: epel-6 [bug 1782957]
Affects: fedora-all [bug 1782956]

Comment 3 errata-xmlrpc 2020-11-04 01:23:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4483 https://access.redhat.com/errata/RHSA-2020:4483

Comment 4 Product Security DevOps Team 2020-11-04 02:23:42 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-2019-19481