The version of PostgreSQL installed on the remote host is 11 prior to 11.21, 12 prior to 12.16, 13 prior to 13.12, 14 prior to 14.9, or 15 prior to 15.4. As such, it is potentially affected by a vulnerability :

  - An extension script is vulnerable if it uses @extowner@, @extschema@, or @extschema:...@ inside a quoting     construct (dollar quoting, '', or ). No bundled extension is vulnerable. Vulnerable uses do appear in a     documentation example and in non-bundled extensions. Hence, the attack prerequisite is an administrator having     installed files of a vulnerable, trusted, non-bundled extension. Subject to that prerequisite, this enables an     attacker having database-level CREATE privilege to execute arbitrary code as the bootstrap superuser. PostgreSQL     will block this attack in the core server, so there's no need to modify individual extensions. (CVE-2023-39417)

  - A vulnerability was found in PostgreSQL with the use of the MERGE command, which fails to test new rows against row     security policies defined for UPDATE and SELECT. If UPDATE and SELECT policies forbid some rows that INSERT policies     do not forbid, a user could store such rows. (CVE-2023-39418)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:3347-1 advisory.

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

  - A vulnerability was found in PostgreSQL with the use of the MERGE command, which fails to test new rows     against row security policies defined for UPDATE and SELECT. If UPDATE and SELECT policies forbid some     rows that INSERT policies do not forbid, a user could store such rows. (CVE-2023-39418)

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7581 advisory.

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

    Security Fix(es):

    * postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)

    * postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)

    * postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)

    * postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)

    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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:7784 advisory.

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

  - A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive     information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling     'unknown'-type values from string literals without type designation can disclose bytes, potentially     revealing notable and confidential information. This issue exists due to excessive data output in     aggregate function calls, enabling remote users to read some portion of system memory. (CVE-2023-5868)

  - A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through     missing overflow checks during SQL array value modification. This issue exists due to an integer overflow     during array modification where a remote user can trigger the overflow by providing specially crafted     data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary     bytes to memory and extensively read the server's memory. (CVE-2023-5869)

  - A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers,     including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful     exploitation requires a non-core extension with a less-resilient background worker and would affect that     specific background worker only. This issue may allow a remote high privileged user to launch a denial of     service (DoS) attack. (CVE-2023-5870)

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:7884 advisory.

    * postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)
    * postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)
    * postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)
    * postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)
    * postgresql: MERGE fails to enforce UPDATE or SELECT row security policies (CVE-2023-39418)

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

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

According to the versions of the postgresql packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - schema_element defeats protective search_path changes; It was found that certain database calls in     PostgreSQL could permit an authed attacker with elevated database-level privileges to execute arbitrary     code. (CVE-2023-2454)

  - Row security policies disregard user ID changes after inlining; PostgreSQL could permit incorrect policies     to be applied in certain cases where role-specific policies are used and a given query is planned under     one role and then executed under other roles. This scenario can happen under security definer functions or     when a common user and query is planned initially and then re-used across multiple SET ROLEs. Applying an     incorrect policy may permit a user to complete otherwise-forbidden reads and modifications. This affects     only databases that have used CREATE POLICY to define a row security policy. (CVE-2023-2455)

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ''). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. 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-2023:7694 advisory.

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

    Security Fix(es):

    * postgresql: schema_element defeats protective search_path changes (CVE-2023-2454)

    * postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)

    * postgresql: Extension scripts replace objects not belonging to the extension. (CVE-2022-2625)

    * postgresql: row security policies disregard user ID changes after inlining. (CVE-2023-2455)

    * postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)

    * postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)

    * postgresql: Client memory disclosure when connecting with Kerberos to modified server (CVE-2022-41862)

    * postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)

    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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:3348-1 advisory.

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

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

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:3346-1 advisory.

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

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

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-6366-1 advisory.

    It was discovered that PostgreSQL incorrectly handled certain extension script substitutions. An attacker     having database-level CREATE privileges can use this issue to execute arbitrary code as the bootstrap     superuser.

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

Note that Nessus has not tested for this issue 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-2023:7714 advisory.

  - IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@,     @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ). If an     administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with     database-level CREATE privilege can execute arbitrary code as the bootstrap superuser. (CVE-2023-39417)

  - A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive     information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling     'unknown'-type values from string literals without type designation can disclose bytes, potentially     revealing notable and confidential information. This issue exists due to excessive data output in     aggregate function calls, enabling remote users to read some portion of system memory. (CVE-2023-5868)

  - A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through     missing overflow checks during SQL array value modification. This issue exists due to an integer overflow     during array modification where a remote user can trigger the overflow by providing specially crafted     data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary     bytes to memory and extensively read the server's memory. (CVE-2023-5869)

  - A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers,     including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful     exploitation requires a non-core extension with a less-resilient background worker and would affect that     specific background worker only. This issue may allow a remote high privileged user to launch a denial of     service (DoS) attack. (CVE-2023-5870)

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 postgresql14 package has been released.

ID	Name	Product	Family	Published	Updated	Severity
179922	PostgreSQL 11.x < 11.21 / 12.x < 12.16 / 13.x < 13.12 / 14.x < 14.9 / 15.x < 15.4 Multiple Vulnerabilities	Nessus	Databases	8/17/2023	5/29/2025	high
179967	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : postgresql15 (SUSE-SU-2023:3347-1)	Nessus	SuSE Local Security Checks	8/18/2023	12/25/2023	high
186437	RHEL 8 : postgresql:13 (RHSA-2023:7581)	Nessus	Red Hat Local Security Checks	11/29/2023	11/7/2024	high
186921	AlmaLinux 9 : postgresql (ALSA-2023:7784)	Nessus	Alma Linux Local Security Checks	12/14/2023	2/16/2024	high
187214	AlmaLinux 8 : postgresql:15 (ALSA-2023:7884)	Nessus	Alma Linux Local Security Checks	12/22/2023	1/13/2025	high
188764	EulerOS 2.0 SP8 : postgresql (EulerOS-SA-2023-3146)	Nessus	Huawei Local Security Checks	1/16/2024	1/16/2024	high
186665	RHEL 8 : postgresql:12 (RHSA-2023:7694)	Nessus	Red Hat Local Security Checks	12/7/2023	11/7/2024	high
179965	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : postgresql15 (SUSE-SU-2023:3348-1)	Nessus	SuSE Local Security Checks	8/18/2023	12/25/2023	high
179969	SUSE SLES15 Security Update : postgresql12 (SUSE-SU-2023:3346-1)	Nessus	SuSE Local Security Checks	8/18/2023	12/25/2023	high
181393	Ubuntu 16.04 ESM : PostgreSQL vulnerability (USN-6366-1)	Nessus	Ubuntu Local Security Checks	9/13/2023	8/27/2024	high
187731	CentOS 8 : postgresql:12 (CESA-2023:7714)	Nessus	CentOS Local Security Checks	1/9/2024	1/9/2024	high
204163	Photon OS 4.0: Postgresql14 PHSA-2023-4.0-0450	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	high

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