Bug 1314757 (CVE-2016-2842)

Summary:	CVE-2016-2842 openssl: doapr_outch function does not verify that certain memory allocation succeeds
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bbaranow, bmaxwell, cdewolf, csutherl, dandread, darran.lofthouse, dknox, dosoudil, erik-fedora, gzaronik, huzaifas, jason.greene, jawilson, jboss-set, jclere, jdoyle, ktietz, lgao, marcandre.lureau, mbabacek, mturk, myarboro, petercho, pgier, psakar, pslavice, psotirop, redhat-bugzilla, rjones, rnetuka, rsvoboda, sardella, security-response-team, slawomir, slukasik, tmraz, twalsh, vtunka, weli, ykawada, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
See Also:	https://issues.redhat.com/browse/JBCS-93
Whiteboard:
Fixed In Version:	openssl 1.0.1s, openssl 1.0.2g	Doc Type:	Bug Fix
Doc Text:	Several flaws were found in the way BIO_*printf functions were implemented in OpenSSL. Applications which passed large amounts of untrusted data through these functions could crash or potentially execute code with the permissions of the user running such an application.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:49:23 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:	1312856, 1312857, 1312858, 1314764, 1314765, 1314766, 1321841, 1321842, 1331569, 1331865, 1331866, 1366994
Bug Blocks:	1314768, 1395463

Description Adam Mariš 2016-03-04 12:15:42 UTC

It was found that doapr_outch function in crypto/bio/b_print.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not verify that a certain memory allocation succeeds, which allows remote attackers to cause a denial of service (out-of-bounds write or memory consumption) or possibly have unspecified other impact via a long string, as demonstrated by a large amount of ASN.1 data. This issues is different than CVE-2016-0799.

Upstream patch:

https://git.openssl.org/?p=openssl.git;a=commit;h=578b956fe741bf8e84055547b1e83c28dd902c73

Comment 1 Adam Mariš 2016-03-04 12:31:23 UTC

Created openssl101e tracking bugs for this issue:

Affects: epel-5 [bug 1314766]

Comment 2 Adam Mariš 2016-03-04 12:31:38 UTC

Created openssl tracking bugs for this issue:

Affects: fedora-all [bug 1314764]

Comment 3 Adam Mariš 2016-03-04 12:31:48 UTC

Created mingw-openssl tracking bugs for this issue:

Affects: fedora-all [bug 1314765]

Comment 10 petercho 2016-04-11 04:26:26 UTC

Can we do this in higher priority?
Clients concern this seriously as it is related to openssl.
Thanks.

Comment 12 Tomas Mraz 2016-04-29 15:17:27 UTC

Note that the patch for CVE-2016-0799 fixes also this issue.

Comment 14 Martin Prpič 2016-05-03 14:53:21 UTC

Acknowledgments:

Name: the OpenSSL project
Upstream: Guido Vranken

Comment 15 errata-xmlrpc 2016-05-09 09:28:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:0722 https://rhn.redhat.com/errata/RHSA-2016-0722.html

Comment 16 errata-xmlrpc 2016-05-10 04:20:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0996 https://rhn.redhat.com/errata/RHSA-2016-0996.html

Comment 21 errata-xmlrpc 2016-10-18 07:08:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.7 Extended Update Support

Via RHSA-2016:2073 https://rhn.redhat.com/errata/RHSA-2016-2073.html

Comment 22 errata-xmlrpc 2016-12-15 22:16:35 UTC

This issue has been addressed in the following products:



Via RHSA-2016:2957 https://rhn.redhat.com/errata/RHSA-2016-2957.html