#VU79455 Permissions, Privileges, and Access Controls in PostgreSQL - CVE-2023-39418

Vulnerability identifier: #VU79455

Vulnerability risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-39418

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software

Vendor: PostgreSQL Global Development Group

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to the MERGE command does not properly enforce UPDATE or SELECT row security policies. A remote user can read or update protected data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 15.0 - 15.3

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External links
https://www.postgresql.org/about/news/postgresql-154-149-1312-1216-1121-and-postgresql-16-beta-3-released-2689/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.