Bug 1288326 - (CVE-2015-3196) CVE-2015-3196 OpenSSL: Race condition handling PSK identify hint
CVE-2015-3196 OpenSSL: Race condition handling PSK identify hint
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20151203,reported=2...
: Security
Depends On: 1288339 1288340 1288341 1288342 1290334 1291582
Blocks: 1288329 1298491 1395463
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Reported: 2015-12-03 23:12 EST by Huzaifa S. Sidhpurwala
Modified: 2017-02-21 06:50 EST (History)
37 users (show)

See Also:
Fixed In Version: openssl 1.0.0t, openssl 1.0.1p, openssl 1.0.2d
Doc Type: Bug Fix
Doc Text:
A race condition flaw, leading to a double free, was found in the way OpenSSL handled pre-shared key (PSK) identify hints. A remote attacker could use this flaw to crash a multi-threaded SSL/TLS client using OpenSSL.
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 2076883 None None None Never

  None (edit)
Description Huzaifa S. Sidhpurwala 2015-12-03 23:12:40 EST
The following was reported by OpenSSL upstream:

If PSK identity hints are received by a multi-threaded client then the values are wrongly updated in the parent SSL_CTX structure. This can
result in a race condition potentially leading to a double free of the identify hint data.

This issue was fixed in OpenSSL 1.0.2d and 1.0.1p but has not been previously listed in an OpenSSL security advisory. This issue also affects OpenSSL 1.0.0 and has not been previously fixed in an OpenSSL 1.0.0 release.

OpenSSL 1.0.2 users should upgrade to 1.0.2d
OpenSSL 1.0.1 users should upgrade to 1.0.1p
OpenSSL 1.0.0 users should upgrade to 1.0.0t

The fix for this issue can be identified in the OpenSSL git repository by commit ids 3c66a669dfc7 (1.0.2), d6be3124f228 (1.0.1) and 1392c238657e (1.0.0).

The fix was developed by Dr. Stephen Henson of the OpenSSL development team.
Comment 1 Huzaifa S. Sidhpurwala 2015-12-03 23:27:11 EST
External References:

https://openssl.org/news/secadv/20151203.txt
Comment 4 Tomas Hoger 2015-12-10 04:21:40 EST
Created mingw-openssl tracking bugs for this issue:

Affects: fedora-all [bug 1290334]
Comment 5 errata-xmlrpc 2015-12-13 23:47:51 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2015:2617 https://rhn.redhat.com/errata/RHSA-2015-2617.html
Comment 6 Fedora Update System 2015-12-14 06:51:22 EST
openssl-1.0.1k-13.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2016-01-06 14:52:25 EST
openssl101e-1.0.1e-5.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.
Comment 12 errata-xmlrpc 2016-12-15 17:15:28 EST
This issue has been addressed in the following products:



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

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