Bug 911682 (CVE-2013-0294)

Summary:	CVE-2013-0294 python-pyrad: poor randomness leads to predictable password hashing and RADIUS IDs
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	lemenkov
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	python-pyrad 2.1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 11:00:04 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	894487, 911683
Bug Blocks:

Description Vincent Danen 2013-02-15 15:59:42 UTC

Nathaniel McCallum reported that pyrad was using Python's random module in a number of places to generate pseudo-random data.  In the case of the authenticator data, it was being used to secure a password sent over the wire.  Because Python's random module is not really suited for this purpose (not random enough), it could lead to password hashing that may be predictable.

This has been corrected in upstream's forthcoming version 2.1 via:

https://github.com/wichert/pyrad/commit/38f74b36814ca5b1a27d9898141126af4953bee5

Comment 1 Vincent Danen 2013-02-15 16:01:22 UTC

Created python-pyrad tracking bugs for this issue

Affects: fedora-all [bug 894487]
Affects: epel-all [bug 911683]

Comment 2 Vincent Danen 2013-02-20 17:11:39 UTC

*** Bug 911685 has been marked as a duplicate of this bug. ***

Comment 3 Vincent Danen 2013-02-20 17:14:32 UTC

Merging the other issue from bug 911685:

Nathaniel McCallum reported that pyrad was creating serialized RADIUS packet IDs in the CreateID() function in packet.py.  This is not suitable for RADIUS as the RFC specifies that the ID must not be predictable.  As a result, the ID of the next packet sent can be spoofed.

This has been corrected in upstream's forthcoming version 2.1 via:

https://github.com/wichert/pyrad/commit/38f74b36814ca5b1a27d9898141126af4953bee5


Due to the same patch being used to fix essentially the same thing, which was introduced at the same time, as per MITRE's direction:

http://www.openwall.com/lists/oss-security/2013/02/15/15

Comment 4 Vincent Danen 2013-02-22 17:09:02 UTC

This is not the same issue as bug 911685 which was assigned CVE-2013-0342, so this is one singular issue unrelated to the other.

Comment 5 Fedora Update System 2013-09-15 00:49:52 UTC

python-pyrad-2.0-3.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 2013-09-15 00:57:10 UTC

python-pyrad-2.0-3.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2013-09-20 19:58:33 UTC

python-pyrad-1.1-3.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 8 Fedora Update System 2013-09-20 19:58:53 UTC

python-pyrad-2.0-3.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 9 Fedora Update System 2013-09-23 00:40:29 UTC

python-pyrad-2.0-3.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 Product Security DevOps Team 2019-06-10 11:00:04 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.