Bug 1747448 (CVE-2019-14824) - CVE-2019-14824 389-ds-base: Read permission check bypass via the deref plugin
Summary: CVE-2019-14824 389-ds-base: Read permission check bypass via the deref plugin
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-14824
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1748199 1748200 1768373 1748198 1748201
Blocks: 1745585
TreeView+ depends on / blocked
 
Reported: 2019-08-30 13:12 UTC by Dhananjay Arunesh
Modified: 2019-11-28 12:54 UTC (History)
13 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the 'deref' plugin of 389-ds-base where it could use the 'search' permission to display attribute values. In some configurations, this could allow an authenticated attacker to view private attributes, such as password hashes.
Clone Of:
Environment:
Last Closed: 2019-11-06 00:53:26 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:3401 None None None 2019-11-05 20:46:03 UTC
Red Hat Product Errata RHSA-2019:3981 None None None 2019-11-26 13:58:58 UTC

Description Dhananjay Arunesh 2019-08-30 13:12:51 UTC
A vulnerability was found in 389-ds-base : the `deref` plugin is checking for either READ or SEARCH permission for dereferencing an attribute.
This means that the SEARCH permission is sufficient to display an attribute via the plugin.

This is relevant in particular in IdM/IPA environment, where a default ACI ("Search existence of password and kerberos keys") in set. This leads to dereferencing able to display userPassword content or any users.

Comment 4 Cedric Buissart 🐶 2019-09-06 07:04:53 UTC
Acknowledgments:

Name: Gerald Vogt (Deutsches Klimarechenzentrum)

Comment 6 Cedric Buissart 🐶 2019-09-06 10:55:16 UTC
Statement:

This vulnerability is rated Important when use in a IdM/IPA environment, where an ACI installed by default allows an authenticated attacker to use this flaw to retrieve the userPassword attribute of any user.

Comment 7 Cedric Buissart 🐶 2019-11-04 09:15:38 UTC
Created 389-ds-base tracking bugs for this issue:

Affects: fedora-all [bug 1768373]

Comment 8 errata-xmlrpc 2019-11-05 20:46:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3401 https://access.redhat.com/errata/RHSA-2019:3401

Comment 9 Product Security DevOps Team 2019-11-06 00:53:26 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-14824

Comment 10 errata-xmlrpc 2019-11-26 13:58:57 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:3981 https://access.redhat.com/errata/RHSA-2019:3981

Comment 11 Cedric Buissart 🐶 2019-11-28 12:54:07 UTC
Upstream patch:
https://pagure.io/389-ds-base/c/ddbe3c8fe

Comment 12 Cedric Buissart 🐶 2019-11-28 12:54:10 UTC
External References:

https://pagure.io/389-ds-base/issue/50716


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