XML External Entity injection in North Grid Proself

1) XML External Entity injection

EUVDB-ID: #VU82199

Risk: Critical

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-45727

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

Proself Standard Edition: 5.62

Proself Enterprise Edition: 5.62

Proself Gateway Edition: 1.65

Proself Mail Sanitize Edition: 1.08

CPE2.3

• cpe:2.3:a:north_grid_corporation:proself_standard_edition:*:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_standard_edition:5.62:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_enterprise_edition:*:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_enterprise_edition:5.62:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_gateway_edition:*:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_gateway_edition:1.65:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_mail_sanitize_edition:*:*:*:*:*:*:*:
• cpe:2.3:a:north_grid_corporation:proself_mail_sanitize_edition:1.08:*:*:*:*:*:*:

External links

http://jvn.jp/en/jp/JVN95981460/index.html
http://www.proself.jp/information/153/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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?

Yes. This vulnerability is being exploited in the wild.