Bug 1894423 (CVE-2020-25694)

Summary:	CVE-2020-25694 postgresql: Reconnection can downgrade connection security settings
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	aboyko, aileenc, akoufoud, alazarot, almorale, anazmy, anon.amish, anstephe, apmukher, asakala, asoldano, atangrin, avibelli, bbaranow, bgeorges, bmaxwell, brian.stansberry, cdewolf, chazlett, clement.escoffier, dandread, darran.lofthouse, databases-maint, devrim, dkreling, dosoudil, drieden, eleandro, etirelli, ggaughan, gmalinko, gsmet, hhorak, hvyas, ibek, iweiss, janstey, jawilson, jbalunas, jmlich83, jochrist, jorton, jpallich, jperkins, jstastny, jwon, krathod, kverlaen, kwills, lgao, lthon, mcascell, mike, mnovotny, msochure, msvehla, mszynkie, nwallace, panovotn, pgallagh, pjindal, pkajaba, pkubat, pmackay, praiskup, probinso, puebele, rguimara, rrajasek, rruss, rstancel, rsvoboda, rsynek, sbiarozk, sdaley, sdouglas, security-response-team, smaestri, tcrider, tgl, tom.jenkinson
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	postgresql 13.1, postgresql 12.5, postgresql 11.10, postgresql 10.15, postgresql 9.6.20, postgresql 9.5.24	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in postgresql. If a client application that creates additional database connections only reuses the basic connection parameters while dropping security-relevant parameters, an opportunity for a man-in-the-middle attack, or the ability to observe clear-text transmissions, could exist. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-14 18:47:17 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1896366, 1896367, 1897219, 1897222, 1897225, 1897228, 1897231, 1897234, 1898210, 1898211, 1898212, 1898213, 1898214, 1898215, 1898216, 1898217, 1898218, 1898219, 1898220, 1898221, 1898222, 1898223, 1898224, 1898225, 1898226, 1898227, 1898228, 1898229, 1898230, 1898231, 1898232, 1898233, 1907894, 1910647
Bug Blocks:	1894439

Description Michael Kaplan 2020-11-04 09:00:45 UTC

Many PostgreSQL-provided client applications have options that create
additional database connections.  Some of those applications reuse only the
basic connection parameters (e.g. host, user, port), dropping others.  If this
drops a security-relevant parameter (e.g. channel_binding, sslmode,
requirepeer, gssencmode), the attacker has an otherwise-unavailable
opportunity to complete a man-in-the-middle attack or observe cleartext
transmission.  Affected applications are clusterdb, pg_dump, pg_restore, psql,
reindexdb, and vacuumdb.  The vulnerability arises only if one invokes an
affected client application with a connection string containing a
security-relevant parameter.

Supported, Vulnerable Versions: 9.5 - 13.

Comment 1 Michael Kaplan 2020-11-04 09:00:59 UTC

Acknowledgments:

Name: Peter Eisentraut

Comment 10 msiddiqu 2020-11-12 15:19:47 UTC

Created mingw-postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897234]


Created postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897231]


Created postgresql:10/postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897222]


Created postgresql:11/postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897228]


Created postgresql:12/postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897225]


Created postgresql:9.6/postgresql tracking bugs for this issue:

Affects: fedora-all [bug 1897219]

Comment 13 Stoyan Nikolov 2020-11-17 08:06:24 UTC

Statement:

In Red Hat Gluster Storage 3, PostgreSQL (embedded in rhevm-dependencies) was shipped as a part of Red Hat Gluster Storage Console that is no longer supported for use with Red Hat Gluster Storage 3.5. Red Hat Gluster Storage Web Administration is now the recommended monitoring tool for Red Hat Storage Gluster clusters.
In Red Hat Virtualization the manager appliance uses a vulnerable version of postgresql. Once a fix has been shipped for RHEL 8 the appliance can consume the fix via a regular yum update.

Comment 14 Mauro Matteo Cascella 2020-11-17 08:17:31 UTC

External References:

https://www.postgresql.org/about/news/postgresql-131-125-1110-1015-9620-and-9524-released-2111/

Comment 15 Mauro Matteo Cascella 2020-11-17 09:39:44 UTC

Upstream fixes:
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=85c54287af56fe351b53913ea2b81e9d6145f964
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=8e5793ab60bba65ffaa0f2237b39c9580d8972c7
https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=a45bc8a4f6495072bc48ad40a5aa0304979114f7

Comment 16 errata-xmlrpc 2020-12-02 10:36:26 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2020:5316 https://access.redhat.com/errata/RHSA-2020:5316

Comment 17 errata-xmlrpc 2020-12-02 10:39:55 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2020:5317 https://access.redhat.com/errata/RHSA-2020:5317

Comment 21 errata-xmlrpc 2020-12-14 12:55:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5401 https://access.redhat.com/errata/RHSA-2020:5401

Comment 22 Product Security DevOps Team 2020-12-14 18:47:17 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25694

Comment 26 errata-xmlrpc 2020-12-16 08:25:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5567 https://access.redhat.com/errata/RHSA-2020:5567

Comment 27 errata-xmlrpc 2020-12-17 15:53:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5619 https://access.redhat.com/errata/RHSA-2020:5619

Comment 28 errata-xmlrpc 2020-12-17 15:58:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5620 https://access.redhat.com/errata/RHSA-2020:5620

Comment 29 errata-xmlrpc 2020-12-21 10:10:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5638 https://access.redhat.com/errata/RHSA-2020:5638

Comment 30 errata-xmlrpc 2020-12-22 08:53:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5661 https://access.redhat.com/errata/RHSA-2020:5661

Comment 31 errata-xmlrpc 2020-12-22 09:27:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5664 https://access.redhat.com/errata/RHSA-2020:5664

Comment 33 errata-xmlrpc 2021-01-11 10:54:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0057 https://access.redhat.com/errata/RHSA-2021:0057

Comment 34 errata-xmlrpc 2021-01-18 09:57:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0161 https://access.redhat.com/errata/RHSA-2021:0161

Comment 35 errata-xmlrpc 2021-01-18 09:58:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0163 https://access.redhat.com/errata/RHSA-2021:0163

Comment 36 errata-xmlrpc 2021-01-18 10:00:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:0164 https://access.redhat.com/errata/RHSA-2021:0164

Comment 37 errata-xmlrpc 2021-01-18 16:15:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0165 https://access.redhat.com/errata/RHSA-2021:0165

Comment 38 errata-xmlrpc 2021-01-18 16:19:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0166 https://access.redhat.com/errata/RHSA-2021:0166

Comment 39 errata-xmlrpc 2021-01-18 16:21:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:0167 https://access.redhat.com/errata/RHSA-2021:0167

Comment 40 errata-xmlrpc 2021-05-06 10:34:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1512 https://access.redhat.com/errata/RHSA-2021:1512