A issue has been discovered in the PostgreSQL database system, which could result in privilege escalation.

For additional information please refer to the upstream announcement at https://www.postgresql.org/about/news/1960/

The version of PostgreSQL installed on the remote host is 9.4.x prior to 9.4.24, 9.5.x prior to 9.5.19, 9.6.x prior to 9.6.15, 10.x prior to 10.10, or 11.x prior to 11.5. It is, therefore, affected by multiple vulnerabilities :

  - An unspecified vulnerability that allows an attacker to execute arbitrary     SQL as the function's owner. (CVE-2019-10208)

  - An insecure password handling vulnerability exists in the     EnterpriseDB Windows intstaller due to use of a temporary file.
    An attack can exploit this to read the PostgreSQL superuser     password from the file. (CVE-2019-10210)

  - An arbitrary code execution vulnerability exists in libeay32.dll     due to use of a hard-coded configuration directory. An attacker     can exploit this to load and execute arbitrary code as the user     running a PostgreSQL server or client. (CVE-2019-10211)

New upstream release 11.5

Per release notes:
https://www.postgresql.org/docs/11/release-11-5.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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0167 advisory.

    PostgreSQL is an advanced object-relational database management system (DBMS).

    The following packages have been upgraded to a later upstream version: postgresql (9.6.20).

    Security Fix(es):

    * postgresql: Reconnection can downgrade connection security settings (CVE-2020-25694)

    * postgresql: Multiple features escape security restricted operation sandbox (CVE-2020-25695)

    * postgresql: TYPE in pg_temp executes arbitrary SQL during SECURITY DEFINER execution (CVE-2019-10208)

    * postgresql: Uncontrolled search path element in CREATE EXTENSION (CVE-2020-14350)

    * postgresql: psql's \gset allows overwriting specially treated variables (CVE-2020-25696)

    * postgresql: Selectivity estimators bypass row security policies (CVE-2019-10130)

    * postgresql: ALTER ... DEPENDS ON EXTENSION is missing authorization checks (CVE-2020-1720)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:3669 advisory.

  - postgresql: Selectivity estimators bypass row security policies (CVE-2019-10130)

  - postgresql: Stack-based buffer overflow via setting a password (CVE-2019-10164)

  - postgresql: TYPE in pg_temp executes arbitrary SQL during SECURITY DEFINER execution (CVE-2019-10208)

  - postgresql: Uncontrolled search path element in logical replication (CVE-2020-14349)

  - postgresql: Uncontrolled search path element in CREATE EXTENSION (CVE-2020-14350)

  - postgresql: ALTER ... DEPENDS ON EXTENSION is missing authorization checks (CVE-2020-1720)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-3669 advisory.

    [10.14-1]
    - Rebase to upstream release 10.14       Fixes RHBZ#1727803       Fixes RHBZ#1741489       Fixes RHBZ#1709196

    [10.13-1]
    - Rebase to upstream release 10.13       Fixes RHBZ#1727803       Fixes RHBZ#1741489       Fixes RHBZ#1709196

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of postgresql95 installed on the remote host is prior to 9.5.23-1.81. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1442 advisory.

    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 evaluate row security     policies before consulting those statistics during query planning; an attacker can exploit this to read     the most common values of certain columns. Affected columns are those for which the attacker has SELECT     privilege and for which, in an ordinary query, row-level security prunes the set of rows visible to the     attacker. (CVE-2019-10130)

    A flaw was discovered in postgresql where arbitrary SQL statements can be executed given a suitable     SECURITY DEFINER function. An attacker, with EXECUTE permission on the function, can execute arbitrary SQL     as the owner of the function. (CVE-2019-10208)

    It was found that some PostgreSQL extensions did not use search_path safely in their installation script.
    An attacker with sufficient privileges could use this flaw to trick an administrator into executing a     specially crafted script, during the installation or update of such extension. This affects PostgreSQL     versions before 12.4, before 11.9, before 10.14, before 9.6.19, and before 9.5.23. (CVE-2020-14350)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-1512 advisory.

    - Patch fixing BZ#1741488 CVE-2019-10208
    - Patch fixing CVE-2020-25694 BZ#1907894

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the postgresql package has been released.

The PostgreSQL project reports :

Versions Affected: 9.4 - 11

Given a suitable `SECURITY DEFINER` function, an attacker can execute arbitrary SQL under the identity of the function owner. An attack requires `EXECUTE` permission on the function, which must itself contain a function call having inexact argument type match. For example, `length('foo'::varchar)` and `length('foo')` are inexact, while `length('foo'::text)` is exact. As part of exploiting this vulnerability, the attacker uses `CREATE DOMAIN` to create a type in a `pg_temp` schema. The attack pattern and fix are similar to that for CVE-2007-2138.

Writing `SECURITY DEFINER` functions continues to require following the considerations noted in the documentation :

https://www.postgresql.org/docs/devel/sql-createfunction.html#SQL-CREA TEFUNCTION-SECURITY

Versions Affected: 11

In a database containing hypothetical, user-defined hash equality operators, an attacker could read arbitrary bytes of server memory.
For an attack to become possible, a superuser would need to create unusual operators. It is possible for operators not purpose-crafted for attack to have the properties that enable an attack, but we are not aware of specific examples.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has postgresql packages installed that are affected by multiple vulnerabilities:

  - A flaw was discovered in postgresql versions 9.4.x before 9.4.24, 9.5.x before 9.5.19, 9.6.x before     9.6.15, 10.x before 10.10 and 11.x before 11.5 where arbitrary SQL statements can be executed given a     suitable SECURITY DEFINER function. An attacker, with EXECUTE permission on the function, can execute     arbitrary SQL as the owner of the function. (CVE-2019-10208)

  - A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before     9.6.20 and before 9.5.24. 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.
    (CVE-2020-25694)

  - A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before     9.6.20 and before 9.5.24. An attacker having permission to create non-temporary objects in at least one     schema can execute arbitrary SQL functions under the identity of a superuser. The highest threat from this     vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-25695)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

New upstream release 10.10

Per release notes:
https://www.postgresql.org/docs/11/release-10-10.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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0164 advisory.

    PostgreSQL is an advanced object-relational database management system (DBMS).

    The following packages have been upgraded to a later upstream version: postgresql (9.6.20).

    Security Fix(es):

    * postgresql: Reconnection can downgrade connection security settings (CVE-2020-25694)

    * postgresql: Multiple features escape security restricted operation sandbox (CVE-2020-25695)

    * postgresql: TYPE in pg_temp executes arbitrary SQL during SECURITY DEFINER execution (CVE-2019-10208)

    * postgresql: Uncontrolled search path element in CREATE EXTENSION (CVE-2020-14350)

    * postgresql: psql's \gset allows overwriting specially treated variables (CVE-2020-25696)

    * postgresql: Selectivity estimators bypass row security policies (CVE-2019-10130)

    * postgresql: ALTER ... DEPENDS ON EXTENSION is missing authorization checks (CVE-2020-1720)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-1738:01 advisory.

    * postgresql: Reconnection can downgrade connection security settings (CVE-2020-25694)
      * postgresql: Multiple features escape security restricted operation sandbox (CVE-2020-25695)
      * postgresql: TYPE in pg_temp executes arbitrary SQL during SECURITY DEFINER execution (CVE-2019-10208)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2022:0181 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2021-32027:
    A flaw was found in postgresql in versions before 13.3, before 12.7, before 11.12, before 10.17 and before     9.6.22. While modifying certain SQL array values, missing bounds checks let authenticated database users     write arbitrary bytes to a wide area of server memory. The highest threat from this vulnerability is to     data confidentiality and integrity as well as system availability.

    CVE-2021-32028:
    A flaw was found in postgresql. Using an INSERT ... ON CONFLICT ... DO UPDATE command on a purpose-crafted     table, an authenticated database user could read arbitrary bytes of server memory. The highest threat from     this vulnerability is to data confidentiality.

    CVE-2019-10208:
    A flaw was discovered in postgresql versions 9.4.x before 9.4.24, 9.5.x before 9.5.19, 9.6.x before     9.6.15, 10.x before 10.10 and 11.x before 11.5 where arbitrary SQL statements can be executed given a     suitable SECURITY DEFINER function. An attacker, with EXECUTE permission on the function, can execute     arbitrary SQL as the owner of the function.

    CVE-2020-14350:
    It was found that some PostgreSQL extensions did not use search_path safely in their installation script.
    An attacker with sufficient privileges could use this flaw to trick an administrator into executing a     specially crafted script, during the installation or update of such extension. This affects PostgreSQL     versions before 12.4, before 11.9, before 10.14, before 9.6.19, and before 9.5.23.

    CVE-2019-10130:
    A vulnerability was found in PostgreSQL versions 11.x up to excluding 11.3, 10.x up to excluding 10.8,     9.6.x up to, excluding 9.6.13, 9.5.x up to, excluding 9.5.17. 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 evaluate row security policies before consulting those statistics during     query planning; an attacker can exploit this to read the most common values of certain columns. Affected     columns are those for which the attacker has SELECT privilege and for which, in an ordinary query, row-     level security prunes the set of rows visible to the attacker.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
127488	Debian DSA-4492-1 : postgresql-9.6 - security update	Nessus	Debian Local Security Checks	2019/8/12	2020/8/21	high
127905	PostgreSQL 9.4.x < 9.4.24 / 9.5.x < 9.5.19 / 9.6.x < 9.6.15 / 10.x < 10.10 / 11.x < 11.5 Multiple Vulnerabilities	Nessus	Databases	2019/8/16	2025/2/5	critical
127939	Fedora 30 : libpq / postgresql (2019-986fce48b4)	Nessus	Fedora Local Security Checks	2019/8/20	2024/5/2	critical
145227	RHEL 8 : postgresql:9.6 (RHSA-2021:0167)	Nessus	Red Hat Local Security Checks	2021/1/20	2024/11/7	high
145882	CentOS 8 : postgresql:10 (CESA-2020:3669)	Nessus	CentOS Local Security Checks	2021/2/1	2024/1/24	high
140486	Oracle Linux 8 : postgresql:10 (ELSA-2020-3669)	Nessus	Oracle Linux Local Security Checks	2020/9/10	2024/10/22	high
141944	Amazon Linux AMI : postgresql95 (ALAS-2020-1442)	Nessus	Amazon Linux Local Security Checks	2020/10/27	2024/12/11	high
149316	Oracle Linux 7 : postgresql (ELSA-2021-1512)	Nessus	Oracle Linux Local Security Checks	2021/5/6	2024/11/2	high
132526	Photon OS 1.0: Postgresql PHSA-2019-1.0-0257	Nessus	PhotonOS Local Security Checks	2019/12/31	2020/1/2	high
127549	FreeBSD : PostgresSQL -- TYPE in pg_temp execute arbitrary SQL during `SECURITY DEFINER` execution (9de4c1c1-b9ee-11e9-82aa-6cc21735f730)	Nessus	FreeBSD Local Security Checks	2019/8/12	2024/5/7	high
154465	NewStart CGSL CORE 5.04 / MAIN 5.04 : postgresql Multiple Vulnerabilities (NS-SA-2021-0109)	Nessus	NewStart CGSL Local Security Checks	2021/10/27	2022/5/9	high
127934	Fedora 29 : postgresql (2019-5fbbf73269)	Nessus	Fedora Local Security Checks	2019/8/20	2024/5/2	critical
145043	RHEL 8 : postgresql:9.6 (RHSA-2021:0164)	Nessus	Red Hat Local Security Checks	2021/1/18	2024/11/7	high
294197	MiracleLinux 7 : postgresql-9.2.24-6.el7 (AXSA:2021-1738:01)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	high
239226	TencentOS Server 3: postgresql (TSSA-2022:0181)	Nessus	Tencent Local Security Checks	2025/6/16	2025/12/5	high

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