Zero-day vulnerability in PJBlog3

SQL injection
CVE-2009-1481

Vulnerability details

Advisory: SB2009042401 - SQL injection in PJHome PJBlog3

Vulnerable component: PJBlog3

CVE-ID: CVE-2009-1481

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/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 inject SQL commands on the target system.

The weakness exists in the checkAlias action when processing malformed data passed via "cname" parameter. A remote attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL queries in web application database..

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability was being actively exploited.

External links:

http://downloads.securityfocus.com/vulnerabilities/exploits/34701.vbs

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.