#VU20003 Permissions, Privileges, and Access Controls in PostgreSQL
Vulnerability identifier: #VU20003
Vulnerability risk: Low
CVSSv3.1: 3.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
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 attacker to escalate privileges on the system.
The vulnerability exists due to way PostreSQL processes SECURITY DEFINER functions. A privileged attacker with EXECUTE permission, which must itself contain a function call having inexact argument type match, can execute arbitrary SQL query under the identity of the function owner.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
PostgreSQL: 11.0 - 11.4, 10.0 - 10.9, 9.6.0 - 9.6.14, 9.5.0 - 9.5.18, 9.4.0 - 9.4.23
External links
http://www.postgresql.org/about/news/1960/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
