The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3651 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3651-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     November 14, 2023                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : postgresql-11     Version        : 11.22-0+deb10u1     CVE ID         : CVE-2023-5868 CVE-2023-5869 CVE-2023-5870

    Several vulnerabilities have been discovered in the PostgreSQL     database system.

    CVE-2023-5868

        Jingzhou Fu discovered a memory disclosure flaw in aggregate         function calls.

    CVE-2023-5869

        Pedro Gallegos reported integer overflow flaws resulting in buffer         overflows in the array modification functions.

    CVE-2023-5870

        Hemanth Sandrana and Mahendrakar Srinivasarao reported that the         pg_cancel_backend role can signal certain superuser processes,         potentially resulting in denial of service.

    For Debian 10 buster, these problems have been fixed in version     11.22-0+deb10u1.

    We recommend that you upgrade your postgresql-11 packages.

    For the detailed security status of postgresql-11 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/postgresql-11

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4434-1 advisory.

  - PostgreSQL Project reports:              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)

  - PostgreSQL Project reports:              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)

  - PostgreSQL Project reports:              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)

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 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.

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

  - 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 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 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.

An update of the postgresql14 package has been released.

ID	Name	Product	Family	Published	Updated	Severity
185523	Debian dla-3651 : libecpg-compat3 - security update	Nessus	Debian Local Security Checks	11/14/2023	1/22/2025	high
185728	SUSE SLES12 Security Update : postgresql13 (SUSE-SU-2023:4434-1)	Nessus	SuSE Local Security Checks	11/15/2023	2/16/2024	high
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
191885	EulerOS 2.0 SP8 : postgresql (EulerOS-SA-2024-1289)	Nessus	Huawei Local Security Checks	3/12/2024	3/12/2024	high
226459	Linux Distros Unpatched Vulnerability : CVE-2023-5868	Nessus	Misc.	3/5/2025	3/5/2025	medium
204267	Photon OS 4.0: Postgresql14 PHSA-2023-4.0-0513	Nessus	PhotonOS Local Security Checks	7/24/2024	7/24/2024	high

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