Bug 1180235 (CVE-2015-0206)

Summary:	CVE-2015-0206 openssl: DTLS memory leak in dtls1_buffer_record
Product:	[Other] Security Response	Reporter:	Vasyl Kaigorodov <vkaigoro>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	carnil, cdewolf, chrisw, dandread, darran.lofthouse, erich, grocha, gzaronik, jason.greene, jawilson, jclere, jdoyle, john.haxby, lgao, myarboro, nlevinki, oguzyilmaz, pslavice, rfortier, rhel-crypto-maint, rhel-process-autobot, rhs-bugs, rsvoboda, vtunka, watson-tool-maintainers, weli, yqu
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	OpenSSL 1.0.1k, OpenSSL 1.0.0p	Doc Type:	Bug Fix
Doc Text:	A memory leak flaw was found in the way the dtls1_buffer_record() function of OpenSSL parsed certain DTLS messages. A remote attacker could send multiple specially crafted DTLS messages to exhaust all available memory of a DTLS server.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-20 10:48:49 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:	1181013, 1181015, 1181016, 1181017, 1181018
Bug Blocks:	1180194

Description Vasyl Kaigorodov 2015-01-08 16:48:48 UTC

OpenSSL released security advisory [1] which fixes the below issue:

A memory leak can occur in the dtls1_buffer_record function under certain
conditions. In particular this could occur if an attacker sent repeated DTLS
records with the same sequence number but for the next epoch. The memory leak
could be exploited by an attacker in a Denial of Service attack through memory
exhaustion.

[1]: https://www.openssl.org/news/secadv_20150108.txt

Comment 1 Vincent Danen 2015-01-08 18:21:54 UTC

Upstream commit that looks to fix the problem:

https://github.com/openssl/openssl/commit/103b171d8fc282ef435f8de9afbf7782e312961f


External References:

https://www.openssl.org/news/secadv_20150108.txt

Comment 2 Huzaifa S. Sidhpurwala 2015-01-12 08:29:24 UTC

Created openssl tracking bugs for this issue:

Affects: fedora-all [bug 1181013]

Comment 4 Fedora Update System 2015-01-13 00:02:32 UTC

openssl-1.0.1k-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Huzaifa S. Sidhpurwala 2015-01-16 04:14:56 UTC

Statement:

This issue does not affect the version of openssl and openssl097a as shipped with Red Hat Enterprise Linux 5. This issue does not affect the version of openssl098e as shipped with Red Hat Enterprise Linux 6 and 7.

Comment 6 Fedora Update System 2015-01-20 21:06:09 UTC

openssl-1.0.1e-41.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 errata-xmlrpc 2015-01-21 21:29:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2015:0066 https://rhn.redhat.com/errata/RHSA-2015-0066.html