Bug 1180235 (CVE-2015-0206) - CVE-2015-0206 openssl: DTLS memory leak in dtls1_buffer_record
Summary: CVE-2015-0206 openssl: DTLS memory leak in dtls1_buffer_record
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2015-0206
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1181013 1181015 1181016 1181017 1181018
Blocks: 1180194
TreeView+ depends on / blocked
 
Reported: 2015-01-08 16:48 UTC by Vasyl Kaigorodov
Modified: 2021-10-20 10:48 UTC (History)
23 users (show)

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.
Clone Of:
Environment:
Last Closed: 2021-10-20 10:48:49 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:0066 0 normal SHIPPED_LIVE Moderate: openssl security update 2015-01-22 02:28:18 UTC

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
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