Bug 1007758 (CVE-2013-4347) - CVE-2013-4347 python-oauth2: Uses poor PRNG in nonce
Summary: CVE-2013-4347 python-oauth2: Uses poor PRNG in nonce
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-4347
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: 1007766 1007767 1121874
Blocks: 1007764 1145400
TreeView+ depends on / blocked
 
Reported: 2013-09-13 09:26 UTC by Ratul Gupta
Modified: 2019-09-29 13:08 UTC (History)
19 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was found that python-oauth2 did not properly generate random values for use in nonces. An attacker able to capture network traffic of a website using OAuth2 authentication could use this flaw to conduct replay attacks against that website.
Clone Of:
Environment:
Last Closed: 2015-08-12 21:55:09 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:1591 0 normal SHIPPED_LIVE Important: Red Hat Satellite 6.1.1 on RHEL 7 2015-08-12 08:49:40 UTC
Red Hat Product Errata RHSA-2015:1592 0 normal SHIPPED_LIVE Important: Red Hat Satellite 6.1.1 on RHEL 6 2015-08-12 09:04:35 UTC

Description Ratul Gupta 2013-09-13 09:26:39 UTC 
It was found that in python-oauth2, an application for authorizing flows for web application,  the nonce value generated isn't random enough, because while doing bulk operations, nonce might get repeated, so there is a chance of predictability. This could allow MITM attackers to conduct replay attacks.

References:
http://www.openwall.com/lists/oss-security/2013/09/12/7
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722657
https://github.com/simplegeo/python-oauth2/issues/9
Comment 1 Ratul Gupta 2013-09-13 09:39:14 UTC 
Created python-oauth2 tracking bugs for this issue:

Affects: fedora-all [bug 1007766]
Affects: epel-6 [bug 1007767]
Comment 4 Kurt Seifried 2014-07-22 07:30:20 UTC 
CloudForms Management Engine no longer includes python-oauth2, so removing.
Comment 5 Fedora Update System 2014-09-26 09:04:35 UTC 
python-oauth2-1.5.211-7.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2014-09-26 09:06:29 UTC 
python-oauth2-1.5.211-7.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 Fedora Update System 2014-09-27 09:51:19 UTC 
python-oauth2-1.5.211-7.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2014-10-28 06:43:50 UTC 
python-oauth2-1.5.211-8.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2014-10-28 06:46:08 UTC 
python-oauth2-1.5.211-8.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2014-10-28 10:57:38 UTC 
python-oauth2-1.5.211-8.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2014-10-28 11:04:12 UTC 
python-oauth2-1.5.211-8.el7 has been pushed to the Fedora EPEL 7 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 12 Fedora Update System 2014-11-01 16:22:13 UTC 
python-oauth2-1.5.211-8.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 14 errata-xmlrpc 2015-08-12 04:51:52 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.1

Via RHSA-2015:1591 https://access.redhat.com/errata/RHSA-2015:1591
Comment 15 errata-xmlrpc 2015-08-12 05:07:29 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 6.1

Via RHSA-2015:1592 https://access.redhat.com/errata/RHSA-2015:1592
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