Vulnerabilities > CVE-2017-7547 - Unspecified vulnerability in Postgresql
Attack vector
NETWORK Attack complexity
LOW Privileges required
SINGLE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
PostgreSQL versions before 9.2.22, 9.3.18, 9.4.13, 9.5.8 and 9.6.4 are vulnerable to authorization flaw allowing remote authenticated attackers to retrieve passwords from the user mappings defined by the foreign server owners without actually having the privileges to do so.
Vulnerable Configurations
Nessus
NASL family Scientific Linux Local Security Checks NASL id SL_20170914_POSTGRESQL_ON_SL7_X.NASL description The following packages have been upgraded to a later upstream version: postgresql (9.2.23). Security Fix(es) : - It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-03-18 modified 2017-09-15 plugin id 103244 published 2017-09-15 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103244 title Scientific Linux Security Update : postgresql on SL7.x x86_64 (20170914) NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-985.NASL description Postgresql93 was updated to 9.3.18 to fix the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) The changelog for the release is here : 	https://www.postgresql.org/docs/9.3/static/release-9-3-18.html This update was imported from the SUSE:SLE-12:Update update project. last seen 2020-06-05 modified 2017-08-31 plugin id 102847 published 2017-08-31 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102847 title openSUSE Security Update : postgresql93 (openSUSE-2017-985) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_982872F17DD311E797366CC21735F730.NASL description The PostgreSQL project reports : - CVE-2017-7546: Empty password accepted in some authentication methods - CVE-2017-7547: The last seen 2020-06-01 modified 2020-06-02 plugin id 102408 published 2017-08-11 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102408 title FreeBSD : PostgreSQL vulnerabilities (982872f1-7dd3-11e7-9736-6cc21735f730) NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-204.NASL description This update for postgresql95 fixes the following issues : Upate to PostgreSQL 9.5.11 : Security issues fixed : - https://www.postgresql.org/docs/9.5/static/release-9-5-11.html - CVE-2018-1053, boo#1077983: Ensure that all temporary files made by pg_upgrade are non-world-readable. - boo#1079757: Rename pg_rewind last seen 2020-06-05 modified 2018-02-23 plugin id 106965 published 2018-02-23 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106965 title openSUSE Security Update : postgresql95 (openSUSE-2018-204) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3935.NASL description Several vulnerabilities have been found in the PostgreSQL database system : - CVE-2017-7546 In some authentication methods empty passwords were accepted. - CVE-2017-7547 User mappings could leak data to unprivileged users. - CVE-2017-7548 The lo_put() function ignored ACLs. For more in-depth descriptions of the security vulnerabilities, please see https://www.postgresql.org/about/news/1772/ last seen 2020-06-01 modified 2020-06-02 plugin id 102442 published 2017-08-14 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102442 title Debian DSA-3935-1 : postgresql-9.4 - security update NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1051.NASL description Several vulnerabilities have been found in the PostgreSQL database system : CVE-2017-7486 Andrew Wheelwright discovered that user mappings were insufficiently restricted. CVE-2017-7546 In some authentication methods empty passwords were accepted. CVE-2017-7547 User mappings could leak data to unprivileged users. For Debian 7 last seen 2020-03-17 modified 2017-08-11 plugin id 102368 published 2017-08-11 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102368 title Debian DLA-1051-1 : postgresql-9.1 security update NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1232.NASL description According to the versions of the postgresql packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-05-06 modified 2017-10-10 plugin id 103734 published 2017-10-10 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103734 title EulerOS 2.0 SP2 : postgresql (EulerOS-SA-2017-1232) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-2236-1.NASL description Postgresql93 was updated to 9.3.18 to fix the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) The changelog for the release is here: 	https://www.postgresql.org/docs/9.3/static/release-9 -3-18.html Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 102695 published 2017-08-23 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102695 title SUSE SLES12 Security Update : postgresql93 (SUSE-SU-2017:2236-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-2258-1.NASL description Postgresql94 was updated to 9.4.13 to fix the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) The changelog for this release is here: https://www.postgresql.org/docs/9.4/static/release-9-4-1 3.html Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 102800 published 2017-08-28 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102800 title SUSE SLES11 Security Update : postgresql94 (SUSE-SU-2017:2258-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-2356-1.NASL description This update for postgresql96 fixes the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) The changelog for this release is here: https://www.postgresql.org/docs/9.6/static/release-9-6-4 .html Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 102974 published 2017-09-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102974 title SUSE SLED12 / SLES12 Security Update : postgresql96 (SUSE-SU-2017:2356-1) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2017-2728.NASL description An update for postgresql is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. PostgreSQL is an advanced object-relational database management system (DBMS). The following packages have been upgraded to a later upstream version: postgresql (9.2.23). (BZ#1484639, BZ#1484647) Security Fix(es) : * It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 103230 published 2017-09-15 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103230 title CentOS 7 : postgresql (CESA-2017:2728) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2017-1231.NASL description According to the versions of the postgresql packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-05-06 modified 2017-10-10 plugin id 103733 published 2017-10-10 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103733 title EulerOS 2.0 SP1 : postgresql (EulerOS-SA-2017-1231) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-884.NASL description pg_user_mappings view discloses passwords to users lacking server privileges : An authorization flaw was found in the way PostgreSQL handled access to the pg_user_mappings view on foreign servers. A remote authenticated attacker could potentially use this flaw to retrieve passwords from the user mappings defined by the foreign server owners without actually having the privileges to do so. (CVE-2017-7547) Empty password accepted in some authentication methods : It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 102872 published 2017-09-01 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102872 title Amazon Linux AMI : postgresql93 / postgresql92 (ALAS-2017-884) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3936.NASL description Several vulnerabilities have been found in the PostgreSQL database system : - CVE-2017-7546 In some authentication methods empty passwords were accepted. - CVE-2017-7547 User mappings could leak data to unprivileged users. - CVE-2017-7548 The lo_put() function ignored ACLs. For more in-depth descriptions of the security vulnerabilities, please see https://www.postgresql.org/about/news/1772/ last seen 2020-06-01 modified 2020-06-02 plugin id 102443 published 2017-08-14 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102443 title Debian DSA-3936-1 : postgresql-9.6 - security update NASL family Fedora Local Security Checks NASL id FEDORA_2017-D9CAC37BD8.NASL description rebase: update to 9.6.4, security fix for CVE-2017-7546 CVE-2017-7547 CVE-2017-7548 Per release notes: https://www.postgresql.org/docs/9.6/static/release-9-6-4.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-08-15 plugin id 102490 published 2017-08-15 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102490 title Fedora 26 : postgresql (2017-d9cac37bd8) NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-1020.NASL description This update for postgresql94 fixes the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) This update was imported from the SUSE:SLE-12:Update update project. last seen 2020-06-05 modified 2017-09-13 plugin id 103156 published 2017-09-13 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/103156 title openSUSE Security Update : postgresql94 (openSUSE-2017-1020) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-2728.NASL description An update for postgresql is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. PostgreSQL is an advanced object-relational database management system (DBMS). The following packages have been upgraded to a later upstream version: postgresql (9.2.23). (BZ#1484639, BZ#1484647) Security Fix(es) : * It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 103209 published 2017-09-14 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103209 title RHEL 7 : postgresql (RHSA-2017:2728) NASL family Fedora Local Security Checks NASL id FEDORA_2017-9148FE36B9.NASL description rebase: update to 9.5.8, security fix for CVE-2017-7546 CVE-2017-7547 CVE-2017-7548 Per release notes: http://www.postgresql.org/docs/9.5/static/release-9-5-8.html Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-08-30 plugin id 102828 published 2017-08-30 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102828 title Fedora 25 : postgresql (2017-9148fe36b9) NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-1021.NASL description This update for postgresql96 fixes the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) The changelog for this release is here: 	https://www.postgresql.org/docs/9.6/static/release-9-6-4.html This update was imported from the SUSE:SLE-12:Update update project. last seen 2020-06-05 modified 2017-09-13 plugin id 103157 published 2017-09-13 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103157 title openSUSE Security Update : postgresql96 (openSUSE-2017-1021) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-908.NASL description The pg_user_mappings view discloses passwords to users lacking server privileges : An authorization flaw was found in the way PostgreSQL handled access to the pg_user_mappings view on foreign servers. A remote authenticated attacker could potentially use this flaw to retrieve passwords from the user mappings defined by the foreign server owners without actually having the privileges to do so. (CVE-2017-7547) Empty password accepted in some authentication methods : It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 103755 published 2017-10-11 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/103755 title Amazon Linux AMI : postgresql96 (ALAS-2017-908) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-2728.NASL description From Red Hat Security Advisory 2017:2728 : An update for postgresql is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. PostgreSQL is an advanced object-relational database management system (DBMS). The following packages have been upgraded to a later upstream version: postgresql (9.2.23). (BZ#1484639, BZ#1484647) Security Fix(es) : * It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 103238 published 2017-09-15 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103238 title Oracle Linux 7 : postgresql (ELSA-2017-2728) NASL family Databases NASL id POSTGRESQL_20170810.NASL description The version of PostgreSQL installed on the remote host is 9.2.x prior to 9.2.22, 9.3.x prior to 9.3.18, 9.4.x prior to 9.4.13, 9.5.x prior to 9.5.8, or 9.6.x prior to 9.6.4. It is, therefore, affected by multiple vulnerabilities : - An authentication bypass flaw exists in that an empty password is accepted in some authentication methods. (CVE-2017-7546) - An information disclosure vulnerability exists in the last seen 2020-06-01 modified 2020-06-02 plugin id 102527 published 2017-08-16 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102527 title PostgreSQL 9.2.x < 9.2.22 / 9.3.x < 9.3.18 / 9.4.x < 9.4.13 / 9.5.x < 9.5.8 / 9.6.x < 9.6.4 Multiple Vulnerabilities NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-885.NASL description pg_user_mappings view discloses passwords to users lacking server privileges : An authorization flaw was found in the way PostgreSQL handled access to the pg_user_mappings view on foreign servers. A remote authenticated attacker could potentially use this flaw to retrieve passwords from the user mappings defined by the foreign server owners without actually having the privileges to do so. (CVE-2017-7547) Empty password accepted in some authentication methods : It was found that authenticating to a PostgreSQL database account with an empty password was possible despite libpq last seen 2020-06-01 modified 2020-06-02 plugin id 102873 published 2017-09-01 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102873 title Amazon Linux AMI : postgresql94 / postgresql95 (ALAS-2017-885) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201710-06.NASL description The remote host is affected by the vulnerability described in GLSA-201710-06 (PostgreSQL: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in PostgreSQL. Please review the referenced CVE identifiers for details. Impact : A remote attacker could escalate privileges, cause a Denial of Service condition, obtain passwords, cause a loss in information, or obtain sensitive information. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 103724 published 2017-10-09 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/103724 title GLSA-201710-06 : PostgreSQL: Multiple vulnerabilities NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3390-1.NASL description Ben de Graaff, Jelte Fennema, and Jeroen van der Ham discovered that PostgreSQL allowed the use of empty passwords in some authentication methods, contrary to expected behaviour. A remote attacker could use an empty password to authenticate to servers that were believed to have password login disabled. (CVE-2017-7546) Jeff Janes discovered that PostgreSQL incorrectly handled the pg_user_mappings catalog view. A remote attacker without server privileges could possibly use this issue to obtain certain passwords. (CVE-2017-7547) Chapman Flack discovered that PostgreSQL incorrectly handled lo_put() permissions. A remote attacker could possibly use this issue to change the data in a large object. (CVE-2017-7548). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 102522 published 2017-08-16 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102522 title Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : postgresql-9.3, postgresql-9.5, postgresql-9.6 vulnerabilities (USN-3390-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-2355-1.NASL description This update for postgresql94 fixes the following issues : - CVE-2017-7547: Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options. (bsc#1051685) - CVE-2017-7546: Disallow empty passwords in all password-based authentication methods. (bsc#1051684) - CVE-2017-7548: lo_put() function ignores ACLs. (bsc#1053259) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 102973 published 2017-09-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102973 title SUSE SLED12 / SLES12 Security Update : postgresql94 (SUSE-SU-2017:2355-1)
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References
- http://www.debian.org/security/2017/dsa-3935
- http://www.debian.org/security/2017/dsa-3936
- http://www.securityfocus.com/bid/100275
- http://www.securitytracker.com/id/1039142
- https://access.redhat.com/errata/RHSA-2017:2677
- https://access.redhat.com/errata/RHSA-2017:2678
- https://access.redhat.com/errata/RHSA-2017:2728
- https://security.gentoo.org/glsa/201710-06
- https://www.postgresql.org/about/news/1772/