Bug 1326251 – CVE-2016-3111 pulp: Race condition when generating RSA keys for authenticating messages between server and consumers

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Bug 1326251 - (CVE-2016-3111) CVE-2016-3111 pulp: Race condition when generating RSA keys for authenticating messages between server and consumers

Summary:	CVE-2016-3111 pulp: Race condition when generating RSA keys for authenticatin...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-3111

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20160413,reported=2...
Keywords:	Security

Depends On:	1326913 1326919
Blocks:	1325942
	Show dependency tree / graph

Reported:	2016-04-12 05:07 EDT by Adam Mariš
Modified:	2017-01-05 06:14 EST (History)
CC List:	11 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	It was found that the private RSA key was created in a directory that is world-readable for a small amount of time. A local user could possibly use this flaw to gain access to the private key information in the file.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-09-19 15:03:05 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Proposed patch (1.44 KB, patch) 2016-04-12 11:38 EDT, Jeremy Cline	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Adam Mariš 2016-04-12 05:07:22 EDT

It was found that spec file generating RSA keys, used for authenticating messages between server and consumers, as post installation step does this in world-readable directories for a brief moment.

Vulnerable code:

https://github.com/pulp/pulp/blob/master/pulp.spec#L473-L486
https://github.com/pulp/pulp/blob/master/pulp.spec#L894-L903

Comment 1 Adam Mariš 2016-04-12 05:07:31 EDT

Acknowledgments:

Name: Jeremy Cline (Red Hat)

Comment 2 Randy Barlow 2016-04-12 09:29:25 EDT

The Fedora spec file is also vulnerable in this way:

http://pkgs.fedoraproject.org/cgit/rpms/pulp.git/tree/pulp.spec#n317

and

http://pkgs.fedoraproject.org/cgit/rpms/pulp.git/tree/pulp.spec#n620

Additionally, the Fedora spec file fails to protect the key but that is reported in a separate issue:

https://bugzilla.redhat.com/show_bug.cgi?id=1325693

Comment 4 Jeremy Cline 2016-04-12 11:38 EDT

Created attachment 1146522 [details]
Proposed patch

Comment 7 Kurt Seifried 2016-09-19 15:03:05 EDT

This issue has been addressed in the following products:

  Red Hat Satellite 6.2

Via RHSA-2016:1501

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