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Bug 1448078 - (CVE-2017-7484) CVE-2017-7484 postgresql: Selectivity estimators bypass SELECT privilege checks
CVE-2017-7484 postgresql: Selectivity estimators bypass SELECT privilege checks
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170511,repor...
: Security
Depends On: 1450116 1449699 1449700 1449701 1449702 1449703 1449704 1449705 1449706 1450115 1450117 1469544 1469545
Blocks: 1415638 1448091
  Show dependency treegraph
 
Reported: 2017-05-04 09:34 EDT by Adam Mariš
Modified: 2018-06-29 18:20 EDT (History)
28 users (show)

See Also:
Fixed In Version: postgresql 9.2.21, postgresql 9.3.17, postgresql 9.4.12, postgresql 9.5.7, postgresql 9.6.3
Doc Type: If docs needed, set a value
Doc Text:
It was found that some selectivity estimation functions did not check user privileges before providing information from pg_statistic, possibly leaking information. A non-administrative database user could use this flaw to steal some information from tables they are otherwise not allowed to access.
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1677 normal SHIPPED_LIVE Moderate: rh-postgresql95-postgresql security update 2017-07-05 05:44:17 EDT
Red Hat Product Errata RHSA-2017:1678 normal SHIPPED_LIVE Moderate: rh-postgresql94-postgresql security update 2017-07-05 05:54:19 EDT
Red Hat Product Errata RHSA-2017:1838 normal SHIPPED_LIVE Moderate: rh-postgresql95-postgresql security update 2017-07-31 15:52:01 EDT
Red Hat Product Errata RHSA-2017:1983 normal SHIPPED_LIVE Moderate: postgresql security and enhancement update 2017-08-01 14:31:18 EDT
Red Hat Product Errata RHSA-2017:2425 normal SHIPPED_LIVE Moderate: rh-postgresql95-postgresql security update 2017-08-07 16:11:22 EDT

  None (edit)
Description Adam Mariš 2017-05-04 09:34:13 EDT
PostgreSQL maintains column statistics for tables. Certain statistics, such as histograms and lists of most common values, contain values taken from the column. PostgreSQL does not check privileges before consulting those statistics during query planning; an attacker can exploit this to view the most common values of arbitrary columns.
Comment 1 Adam Mariš 2017-05-04 09:34:31 EDT
Acknowledgments:

Name: the PostgreSQL project
Upstream: Robert Haas
Comment 2 Cedric Buissart 2017-05-09 10:21:44 EDT
Upstream set of patches : 
* Add security checks to selectivity estimation functions
https://github.com/postgres/postgres/commit/e2d4ef8de
* Fix possibly-uninitialized variable.
https://github.com/postgres/postgres/commit/b6576e59
* Further patch rangetypes_selfuncs.c's statistics slot management.
https://github.com/postgres/postgres/commit/da075960
Comment 4 Adam Mariš 2017-05-11 10:37:23 EDT
External References:

https://www.postgresql.org/about/news/1746/
Comment 5 Adam Mariš 2017-05-11 10:46:53 EDT
Created mingw-postgresql tracking bugs for this issue:

Affects: epel-7 [bug 1450116]
Affects: fedora-all [bug 1450117]


Created postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1450115]
Comment 8 errata-xmlrpc 2017-07-05 01:45:13 EDT
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS

Via RHSA-2017:1677 https://access.redhat.com/errata/RHSA-2017:1677
Comment 9 errata-xmlrpc 2017-07-05 01:55:13 EDT
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS

Via RHSA-2017:1678 https://access.redhat.com/errata/RHSA-2017:1678
Comment 11 errata-xmlrpc 2017-07-31 11:52:43 EDT
This issue has been addressed in the following products:

  Red Hat Satellite 5.8
  Red Hat Satellite 5.8 ELS

Via RHSA-2017:1838 https://access.redhat.com/errata/RHSA-2017:1838
Comment 12 errata-xmlrpc 2017-08-01 16:45:26 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1983 https://access.redhat.com/errata/RHSA-2017:1983
Comment 13 errata-xmlrpc 2017-08-07 12:12:49 EDT
This issue has been addressed in the following products:

  Red Hat Satellite 5.7

Via RHSA-2017:2425 https://access.redhat.com/errata/RHSA-2017:2425

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