Security Bulletin: EDB Postgres Advanced Server (EPAS)

Summary

This security bulletin identifies a set of common vulnerabilities that have been addressed in EDB Postgres Advanced Server with IBM 15.4.

Vulnerability Details

CVEID:CVE-2023-41113
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to obtain sensitive information, caused by a flaw in the accesshistory() function. By sending a specially crafted request, an attacker could exploit this vulnerability to enumerate file existence information, and use this information to launch further attacks against the affected system.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264021 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2023-41114
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to obtain sensitive information, caused by improper permission validation by the get_url_as_text and get_url_as_bytea functions. By sending a specially crafted request, an attacker could exploit this vulnerability to read arbitrary files and use this information to launch further attacks against the affected system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264024 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2023-41115
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to obtain sensitive information, caused by improper permission validation by the UTL_ENCODE function. By sending a specially crafted request, an attacker could exploit this vulnerability to read any large object information, and use this information to launch further attacks against the affected system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264025 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2023-41116
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to bypass security restrictions, caused by improper permission validation when using DBMS_MVIEW. By sending a specially crafted request, an attacker could exploit this vulnerability to refresh any materialized view.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264023 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2023-41117
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a search_path attack in the SECURITY DEFINER functions. By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264018 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-41118
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to bypass security restrictions caused by a UTL_FILE permission bypass. By configuring file locations using CREATE DIRECTORY, an attacker could exploit this vulnerability to bypass authorization requirements and access underlying implementation functions.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264022 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

CVEID:CVE-2023-41119
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to gain elevated privileges on the system, caused by a flaw in the dbms_aq helper function. By sending a specially crafted request, an authenticated attacker could exploit this vulnerability to run arbitrary SQL as a superuser.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264020 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-41120
**DESCRIPTION:**EnterpriseDB Postgres Advanced Server could allow a remote authenticated attacker to bypass security restrictions, caused by improper permission validation by the DBMS_PROFILER function. By sending a specially crafted request, an attacker could exploit this vulnerability to remove all accumulated profiling data on a system-wide basis.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/264026 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

IBM Data Management Platform for EDB Postgres Enterprise for IBM Cloud Pak for Data

| All versions before 4.7.3 and 4.8.0.

Remediation/Fixes

Download product versions from IBM Passport Advantage Online.

IBM Data Management Platform for EDB Postgres Enterprise for IBM Cloud Pak for Data| Update to latest supported version
4.7.3 or 4.8.0 or later.|

Follow the instructions to install or upgrade EDB in the What’s new or changed in EDB Postgres in the IBM Cloud Pak for Data documentation.

Workarounds and Mitigations

None