Zero-day vulnerability in Plesk

SQL injection
CVE-2012-1557

The vulnerability may be tied to the DarkLeech attack campaign.

Vulnerability details

Advisory: SB2012021502 - SQL injection in Parallels Plesk Panel

Vulnerable component: Plesk

CVE-ID: CVE-2012-1557

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

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

Description:

The vulnerability allows a remote attacker to execute arbitrary SQL commands in vulnerable application.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL commands in the back-end database.

Successful exploitation may allow an attacker to gain unauthorized access to the vulnerable system.

Note: this vulnerability is being actively exploited.

Known APT campaigns:

DarkLeech attack campaign

The campaign dates back to 2011. The hackers used Nymaim ransomware that locks users' computers and demands $300 to free their data. During further attacks, the hackers used Reveton malware to target visitors of FireEye Security Careers Webpage.

External links:

http://download1.parallels.com/Plesk/PP10/parallels-plesk-panel-10-windows-updates-release-notes.htm...
https://www.viestintavirasto.fi/kyberturvallisuus/haavoittuvuudet/2012/haavoittuvuus-2012-035.html
https://kb.plesk.com/en/113321
http://www.h-online.com/security/news/item/Bug-in-Plesk-administration-software-is-being-actively-ex...
http://cwcsstatus.co.uk/security-notifications/2012/11/07/plesk-sql-injection-vulnerability-part-4.h...
http://blogs.cisco.com/security/possible-exploit-vector-for-darkleech-compromises
http://www.darkreading.com/attacks-breaches/possible-exploit-avenue-discovered-for-darkleech-web-server-attacks/d/d-id/1139631?

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.