Bug 1331563 (CVE-2016-2176) - CVE-2016-2176 openssl: EBCDIC overread in X509_NAME_oneline()
Summary: CVE-2016-2176 openssl: EBCDIC overread in X509_NAME_oneline()
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-2176
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1330106
TreeView+ depends on / blocked
 
Reported: 2016-04-28 19:41 UTC by Tomas Hoger
Modified: 2021-02-17 03:57 UTC (History)
3 users (show)

Fixed In Version: openssl 1.0.1t, openssl 1.0.2h
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-04-28 19:45:14 UTC
Embargoed:

Attachments (Terms of Use)
OpenSSL upstream fix (10.98 KB, patch)
2016-04-28 19:43 UTC, Tomas Hoger 		no flags Details | Diff
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Description Tomas Hoger 2016-04-28 19:41:14 UTC 
Quoting form the draft of OpenSSL upstream advisory:

EBCDIC overread (CVE-2016-2176)
===============================

Severity: Low

ASN1 Strings that are over 1024 bytes can cause an overread in applications
using the X509_NAME_oneline() function on EBCDIC systems. This could result in
arbitrary stack data being returned in the buffer.

OpenSSL 1.0.2 users should upgrade to 1.0.2h
OpenSSL 1.0.1 users should upgrade to 1.0.1t

This issue was reported to OpenSSL on 5th March 2016 by Guido Vranken. The
fix was developed by Matt Caswell of the OpenSSL development team.
Comment 1 Tomas Hoger 2016-04-28 19:41:24 UTC 
Acknowledgments:

Name: the OpenSSL project
Upstream: Guido Vranken
Comment 2 Tomas Hoger 2016-04-28 19:43:07 UTC 
Created attachment 1152051 [details]
OpenSSL upstream fix
Comment 3 Tomas Hoger 2016-04-28 19:45:14 UTC 
OpenSSL packages distributed by Red Hat do not enable EBCDIC support and are therefore unaffected by this issue.
Comment 4 Martin Prpič 2016-05-03 14:19:39 UTC 
External References:

https://openssl.org/news/secadv/20160503.txt
Comment 5 Tomas Hoger 2016-05-04 12:55:34 UTC 
Upstream commit:

https://git.openssl.org/?p=openssl.git;a=commitdiff;h=2919516136a4227d9e6d8f2fe66ef976aaf8c561
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