XXE in PostgreSQL JDBC Driver

Published: 2020-06-04 | Updated: 2020-08-10

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2020-13692
CWE-ID	CWE-611
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Postgresql JDBC Driver Universal components / Libraries / Libraries used by multiple products
Vendor	PostgreSQL Global Development Group

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) XML External Entity injection

EUVDB-ID: #VU41479

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13692

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Postgresql JDBC Driver: 42.0.0 - 42.2.12

CPE2.3

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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