SQL injection in PostgreSQL

1) SQL injection

EUVDB-ID: #VU15796

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-16850

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to execute arbitrary SQL commands in web application database.

The vulnerability exists due to insufficient sanitization of statements involving CREATE TRIGGER REFERENCING. A remote attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL commands in web application database when running the pg_upgrade utility on the database or during a pg_dump utility dump/restore cycle.

Successful exploitation of the vulnerability may allow an attacker to gain administrative access to vulnerable web application.

Mitigation

The vulnerability has been fixed in the versions 10.6, 11.1.

Vulnerable software versions

PostgreSQL: 10.0 - 11.0

External links

http://www.postgresql.org/about/news/1905/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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