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Bug 1588810 - (CVE-2018-10852) CVE-2018-10852 sssd: information leak from the sssd-sudo responder
CVE-2018-10852 sssd: information leak from the sssd-sudo responder
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180626,reported=2...
: Security
Depends On: 1589293 1595056 1595057 1589292 1590603 1595058
Blocks: 1586244 1588811
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Reported: 2018-06-07 17:28 EDT by Laura Pardo
Modified: 2018-10-30 03:43 EDT (History)
26 users (show)

See Also:
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.
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3158 None None None 2018-10-30 03:43 EDT

  None (edit)
Description Laura Pardo 2018-06-07 17:28:31 EDT 
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 16:49:25 EDT 
Acknowledgments:

Name: Jakub Hrozek (Red Hat)
Comment 10 Doran Moppert 2018-06-25 20:37:27 EDT 
External References:

https://pagure.io/SSSD/sssd/issue/3766
Comment 11 Doran Moppert 2018-06-25 23:03:35 EDT 
Created sssd tracking bugs for this issue:

Affects: fedora-all [bug 1595056]
Comment 13 Jakub Hrozek 2018-07-11 15:36:42 EDT 
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 03:43:45 EDT 
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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