Multiple vulnerabilities in PostgreSQL



Published: 2023-05-11
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-2454
CVE-2023-2455
CWE-ID CWE-264
CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		PostgreSQL
Server applications / Database software

Vendor PostgreSQL Global Development Group

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU76041

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2023-2454

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to improperly imposed security restrictions. A remote database user with   CREATE privilege can bypass protective search_path changes via "CREATE SCHEMA ... schema_element" command and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 9.0 - 15.2

CPE2.3 External links

http://www.postgresql.org/about/news/postgresql-153-148-1311-1215-and-1120-released-2637/


Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Security features bypass

EUVDB-ID: #VU76042

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2023-2455

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to incomplete fix for #VU40402 (CVE-2016-2193) that did not anticipate a scenario involving function inlining. 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 9.0 - 15.2

CPE2.3 External links

http://www.postgresql.org/about/news/postgresql-153-148-1311-1215-and-1120-released-2637/


Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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