Bug 1588810 (CVE-2018-10852) - CVE-2018-10852 sssd: information leak from the sssd-sudo responder
Summary: CVE-2018-10852 sssd: information leak from the sssd-sudo responder
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-10852
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1595056 1589292 1589293 1590603 1595057 1595058
Blocks: 1586244 1588811
TreeView+ depends on / blocked
 
Reported: 2018-06-07 21:28 UTC by Laura Pardo
Modified: 2019-09-29 14:41 UTC (History)
25 users (show)

Fixed In Version: SSSD 1.16.3
Doc Type: If docs needed, set a value
Doc Text:
The UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD utilizes too broad of a set of permissions. Any user who can send a message using the same raw protocol that sudo and SSSD use can read the sudo rules available for any user.
Clone Of:
Environment:
Last Closed: 2019-06-10 10:28:10 UTC


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Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3158 None None None 2018-10-30 07:43:55 UTC

Description Laura Pardo 2018-06-07 21:28:31 UTC
The UNIX pipe which sudo uses to contact SSSD and read the available sudo rules from SSSD has too wide permissions, which means that anyone who can send a message using the same raw protocol that sudo and SSSD use can read the sudo rules available for any user.

Comment 4 Laura Pardo 2018-06-11 20:49:25 UTC
Acknowledgments:

Name: Jakub Hrozek (Red Hat)

Comment 10 Doran Moppert 2018-06-26 00:37:27 UTC
External References:

https://pagure.io/SSSD/sssd/issue/3766

Comment 11 Doran Moppert 2018-06-26 03:03:35 UTC
Created sssd tracking bugs for this issue:

Affects: fedora-all [bug 1595056]

Comment 13 Jakub Hrozek 2018-07-11 19:36:42 UTC
To test, it is sufficient to "ls -l /var/lib/sss/pipes/sudo". Before the patch, the permissions were open to anyone, after the patch, only root should have either read or write permissions.

Comment 14 errata-xmlrpc 2018-10-30 07:43:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3158 https://access.redhat.com/errata/RHSA-2018:3158


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