The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7784 advisory.

    [13.13-1.0.1]
    - Update to 13.13
    - Fixes CVE-2023-5868, CVE-2023-5869, CVE-2023-5870, and CVE-2023-39417

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of postgresql installed on the remote host is prior to 13.13-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2POSTGRESQL13-2024-005 advisory.

    Certain aggregate function calls receiving unknown-type arguments could disclose bytes of server memory     from the end of the unknown-type value to the next zero byte. One typically gets an unknown-type value     via a string literal having no type designation. We have not confirmed or ruled out viability of attacks     that arrange for presence of notable, confidential information in disclosed bytes. (CVE-2023-5868)

    While modifying certain SQL array values, missing overflow checks let authenticated database users write     arbitrary bytes to a memory area that facilitates arbitrary code execution. Missing overflow checks also     let authenticated database users read a wide area of server memory. The CVE-2021-32027 fix covered some     attacks of this description, but it missed others. (CVE-2023-5869)

    The documentation says the pg_cancel_backend role cannot signal a backend owned by a superuser. On the     contrary, it can signal background workers, including the logical replication launcher. It can signal     autovacuum workers and the autovacuum launcher. Signaling autovacuum workers and those two launchers     provides no meaningful exploit, so exploiting this vulnerability requires a non-core extension with a     less-resilient background worker. For example, a non-core background worker that does not auto-restart     would experience a denial of service with respect to that particular background worker. (CVE-2023-5870)

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 version of postgresql installed on the remote host is prior to 12.17-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2POSTGRESQL12-2024-007 advisory.

    Certain aggregate function calls receiving unknown-type arguments could disclose bytes of server memory     from the end of the unknown-type value to the next zero byte. One typically gets an unknown-type value     via a string literal having no type designation. We have not confirmed or ruled out viability of attacks     that arrange for presence of notable, confidential information in disclosed bytes. (CVE-2023-5868)

    While modifying certain SQL array values, missing overflow checks let authenticated database users write     arbitrary bytes to a memory area that facilitates arbitrary code execution. Missing overflow checks also     let authenticated database users read a wide area of server memory. The CVE-2021-32027 fix covered some     attacks of this description, but it missed others. (CVE-2023-5869)

    The documentation says the pg_cancel_backend role cannot signal a backend owned by a superuser. On the     contrary, it can signal background workers, including the logical replication launcher. It can signal     autovacuum workers and the autovacuum launcher. Signaling autovacuum workers and those two launchers     provides no meaningful exploit, so exploiting this vulnerability requires a non-core extension with a     less-resilient background worker. For example, a non-core background worker that does not auto-restart     would experience a denial of service with respect to that particular background worker. (CVE-2023-5870)

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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7656 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7785 advisory.

    pgaudit     pg_repack     postgres-decoderbufs     postgresql     [15.5-1]
    - update to 15.5
    - Fixes CVE-2023-5868, CVE-2023-5869, CVE-2023-5870, CVE-2023-39417, and CVE-2023-39418       Resolves: RHEL-16100, RHEL-16124, RHEL-16139

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 remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7884 advisory.

    - Fixes: CVE-2023-5868 CVE-2023-5869 CVE-2023-5870 CVE-2023-39417 CVE-2023-39418

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 remote Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:7785 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)

  - 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.

ID	Name	Product	Family	Published	Updated	Severity
187032	Oracle Linux 9 : postgresql (ELSA-2023-7784)	Nessus	Oracle Linux Local Security Checks	12/15/2023	10/22/2024	high
226459	Linux Distros Unpatched Vulnerability : CVE-2023-5868	Nessus	Misc.	3/5/2025	3/5/2025	medium
189468	Amazon Linux 2 : postgresql (ALASPOSTGRESQL13-2024-005)	Nessus	Amazon Linux Local Security Checks	1/24/2024	12/11/2024	high
189478	Amazon Linux 2 : postgresql (ALASPOSTGRESQL12-2024-007)	Nessus	Amazon Linux Local Security Checks	1/24/2024	12/11/2024	high
189640	RHEL 8 : postgresql:12 (RHSA-2023:7656)	Nessus	Red Hat Local Security Checks	1/26/2024	11/7/2024	high
186961	Oracle Linux 9 : postgresql:15 (ELSA-2023-7785)	Nessus	Oracle Linux Local Security Checks	12/15/2023	10/24/2024	high
187183	Oracle Linux 8 : postgresql:15 (ELSA-2023-7884)	Nessus	Oracle Linux Local Security Checks	12/21/2023	10/22/2024	high
187706	Rocky Linux 9 : postgresql:15 (RLSA-2023:7785)	Nessus	Rocky Linux Local Security Checks	1/9/2024	1/9/2024	high

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