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Bug 1477187 - (CVE-2017-7548) CVE-2017-7548 postgresql: lo_put() function ignores ACLs
CVE-2017-7548 postgresql: lo_put() function ignores ACLs
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=20170810,repor...
: Security
Depends On: 1480283 1480284 1484632 1484633 1484634 1484635 1484636 1484637
Blocks: 1477189
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Reported: 2017-08-01 08:34 EDT by Adam Mariš
Modified: 2018-06-10 17:35 EDT (History)
30 users (show)

See Also:
Fixed In Version: postgresql 9.4.13, postgresql 9.5.8, postgresql 9.6.4
Doc Type: If docs needed, set a value
Doc Text:
An authorization flaw was found in the way PostgreSQL handled large objects. A remote, authenticated attacker with no privileges on a large object could potentially use this flaw to overwrite the entire content of the object, thus resulting in denial of service.
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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-2017:2677 normal SHIPPED_LIVE Moderate: rh-postgresql95-postgresql security update 2017-09-12 08:00:23 EDT
Red Hat Product Errata RHSA-2017:2678 normal SHIPPED_LIVE Moderate: rh-postgresql94-postgresql security update 2017-09-12 10:02:27 EDT

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Description Adam Mariš 2017-08-01 08:34:50 EDT 
Users with no privilege on a large object can overwrite the entire content of the object.

Supported vulnerable versions: 9.4 - 9.6

Upstream patch:

https://github.com/postgres/postgres/commit/f1cda6d6cbb2

Bug introduced in:

https://github.com/postgres/postgres/commit/c50b7c09d852b6d

The first affected upstream version is 9.4.
Comment 1 Adam Mariš 2017-08-01 08:35:00 EDT 
Acknowledgments:

Name: the PostgreSQL project
Upstream: Chapman Flack
Comment 2 Adam Mariš 2017-08-10 11:09:06 EDT 
External References:

https://www.postgresql.org/about/news/1772/
Comment 3 Adam Mariš 2017-08-10 11:12:42 EDT 
Created mingw-postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1480283]


Created postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1480284]
Comment 8 errata-xmlrpc 2017-09-12 04:01:48 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-2017:2677 https://access.redhat.com/errata/RHSA-2017:2677
Comment 9 errata-xmlrpc 2017-09-12 06:04:03 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-2017:2678 https://access.redhat.com/errata/RHSA-2017:2678
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