Bug 1351593 (CVE-2016-5404) - CVE-2016-5404 ipa: Insufficient privileges check in certificate revocation
Summary: CVE-2016-5404 ipa: Insufficient privileges check in certificate revocation
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-5404
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: 1366979 1366980 1366981 1366982 1367883
Blocks: 1351595
TreeView+ depends on / blocked
 
Reported: 2016-06-30 11:54 UTC by Andrej Nemec
Modified: 2021-02-17 03:38 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2016-09-01 14:11:59 UTC
Embargoed:

Attachments (Terms of Use)
Patch for ipa-4.4 (5.45 KB, patch)
2016-08-01 12:34 UTC, Fraser Tweedale 		no flags Details | Diff
Patch for ipa-4.3 (4.63 KB, patch)
2016-08-01 12:35 UTC, Fraser Tweedale 		no flags Details | Diff
Patch for ipa-4.2 (4.63 KB, patch)
2016-08-01 12:35 UTC, Fraser Tweedale 		no flags Details | Diff
Patch for ipa-4.1 (4.67 KB, patch)
2016-08-01 12:36 UTC, Fraser Tweedale 		no flags Details | Diff
Patch for ipa-3.0 AND ipa-2.1 (4.71 KB, patch)
2016-08-01 12:38 UTC, Fraser Tweedale 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:1797 0 normal SHIPPED_LIVE Moderate: ipa security update 2016-09-01 17:57:02 UTC

Description Andrej Nemec 2016-06-30 11:54:16 UTC 
Summary: a user with 'retrieve certificate' permission can revoke
any certificate.  The 'revoke certificate' permission is not
required.

Detail: the 'cert_revoke' command does check for the 'revoke
certificate' permission, however, if an access error is raised, it
then invokes the 'cert_show' command.  The rational was to re-use a
"self-service" check that is part of the 'cert_show' command,
however, it is sufficient that 'cert_show' execute successfully for
'cert_revoke' to recover from the access error and continue.
Therefore, anyone with 'retrieve certificate' permission can revoke
*any* certificate.

Impact: anyone with 'retrieve certificate' permission can cause
various kinds of DoS by revoking any cert they want.

Scope: Every supported versions of RHEL with IDM are affected.
Comment 1 Andrej Nemec 2016-06-30 11:54:21 UTC 
Acknowledgments:

Name: Fraser Tweedale (Red Hat)
Comment 16 Cedric Buissart 2016-08-17 17:25:01 UTC 
Created freeipa tracking bugs for this issue:

Affects: fedora-all [bug 1367883]
Comment 17 Fedora Update System 2016-08-29 18:54:00 UTC 
freeipa-4.3.2-2.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 18 errata-xmlrpc 2016-09-01 13:58:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2016:1797 https://rhn.redhat.com/errata/RHSA-2016-1797.html
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