Bug 1325934 (CVE-2016-3108) - CVE-2016-3108 pulp: Insecure temporary file used when generating certificate for Pulp Nodes
Summary: CVE-2016-3108 pulp: Insecure temporary file used when generating certificate ...
Status: CLOSED ERRATA
Alias: CVE-2016-3108
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: impact=moderate,public=20160413,repor...
Keywords: Security
Depends On: 1326913 1326919
Blocks: 1325942
TreeView+ depends on / blocked
 
Reported: 2016-04-11 12:53 UTC by Adam Mariš
Modified: 2019-06-08 21:06 UTC (History)
18 users (show)

(edit)
It was found that the private key for the node certificate was contained in a world-readable temporary file. A local user could possibly use this flaw to gain access to the private key information in the temporary file.
Clone Of:
(edit)
Last Closed: 2016-09-19 19:02:46 UTC


Attachments (Terms of Use)
Proposed patch (1.99 KB, patch)
2016-04-11 12:54 UTC, Adam Mariš
no flags Details | Diff
Proposed patch (2.06 KB, patch)
2016-04-12 14:32 UTC, Randy Barlow
no flags Details | Diff


External Trackers
Tracker ID Priority Status Summary Last Updated
Pulp Redmine 1842 Low CLOSED - WORKSFORME Test Redmine's Bugzilla Integration 2016-04-13 19:57 UTC

Description Adam Mariš 2016-04-11 12:53:28 UTC
It was reported that pulp-gen-nodes-certificate script uses insecurely created temporary files for storing the generated node certificates, allowing local attackers to leak the keys or overwrite arbitrary file via symlink.

Comment 1 Adam Mariš 2016-04-11 12:53:37 UTC
Acknowledgments:

Name: Jeremy Cline (Red Hat), Sander Bos

Comment 2 Adam Mariš 2016-04-11 12:54 UTC
Created attachment 1145990 [details]
Proposed patch

Comment 3 Randy Barlow 2016-04-12 14:32 UTC
Created attachment 1146475 [details]
Proposed patch

I am attaching a revised version of the patch that removes the unneeded umask statement, and credits jcline in the commit message.

Comment 4 Randy Barlow 2016-04-13 16:52:53 UTC
This is reported upstream as #1830 and is fixed by PR #2528:

https://pulp.plan.io/issues/1830
https://github.com/pulp/pulp/pull/2528

Comment 7 pulp-infra@redhat.com 2016-04-13 19:57:29 UTC
The Pulp upstream bug status is at CLOSED - WORKSFORME. Updating the external tracker on this bug.

Comment 8 pulp-infra@redhat.com 2016-04-13 19:57:35 UTC
The Pulp upstream bug priority is at Low. Updating the external tracker on this bug.

Comment 9 Kurt Seifried 2016-09-19 19:02:46 UTC
This issue has been addressed in the following products:

  Red Hat Satellite 6.2

Via RHSA-2016:1501


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