Bug 1406703 (CVE-2016-10027) - CVE-2016-10027 smack: TLS SecurityMode.required bypass via StripTLS attack
Summary: CVE-2016-10027 smack: TLS SecurityMode.required bypass via StripTLS attack
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-10027
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: 1406704
Blocks: 1406706
TreeView+ depends on / blocked
 
Reported: 2016-12-21 09:41 UTC by Andrej Nemec
Modified: 2020-12-15 15:21 UTC (History)
22 users (show)

Fixed In Version: smack 4.1.9
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Clone Of:
Environment:
Last Closed: 2019-06-08 03:04:52 UTC
Embargoed:

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Description Andrej Nemec 2016-12-21 09:41:57 UTC 

A vulnerability in the Smack XMPP library was reported where the security of
the TLS connection is not always enforced. By stripping the "starttls"
feature from the server response with a man-in-the-middle tool, an attacker
can force the client to authenticate in clear text even if the
"SecurityMode.required" TLS setting has been set.

References:

http://seclists.org/oss-sec/2016/q4/716
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22

Upstream bug:

https://issues.igniterealtime.org/browse/SMACK-739

Upstream patches:

https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04
Comment 1 Andrej Nemec 2016-12-21 09:44:12 UTC 
Created smack tracking bugs for this issue:

Affects: fedora-all [bug 1406704]
Comment 3 Andrej Nemec 2016-12-23 07:41:10 UTC 
CVE assignment:

http://seclists.org/oss-sec/2016/q4/739
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