Bug 1588810 (CVE-2018-10852)

Summary:	CVE-2018-10852 sssd: information leak from the sssd-sudo responder
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abokovoy, bcourt, bkearney, dmoppert, fidencio, grajaiya, jhrozek, jmatthew, lpardo, lslebodn, mkosek, mmccune, mrike, mzidek, ohadlevy, pbrezina, rchan, rharwood, rjerrido, sbose, security-response-team, ssorce, sssd-maint, tsanders, tscherf
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:28:10 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1589292, 1589293, 1590603, 1595056, 1595057, 1595058
Bug Blocks:	1586244, 1588811

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

Comment 15 Doran Moppert 2020-12-23 03:05:29 UTC

Statement:

Red Hat Satellite since version 6.4 uses sssd from the Red Hat Enterprise Linux repositories, where this vulnerability is fixed.