Source: cve@mitre.org
SQL injection vulnerability in detail.asp in Site2Nite Vacation Rental (VRBO) Listings allows remote attackers to execute arbitrary SQL commands via the ID parameter.
Site2Nite Vacation Rental (VRBO) Listings is vulnerable to a critical SQL injection flaw, allowing attackers to execute arbitrary SQL commands. This could lead to complete database compromise, including the theft of sensitive customer data and potential server takeover. Immediate patching and security assessments are crucial to mitigate this risk.
Step 1: Payload Delivery: An attacker crafts a malicious URL containing a specially crafted SQL injection payload within the ID parameter. For example: detail.asp?ID=1' OR 1=1--
Step 2: Request Processing: The user's web browser sends the crafted URL to the vulnerable detail.asp script.
Step 3: Query Construction: The detail.asp script retrieves the value of the ID parameter and incorporates it directly into an SQL query, without sanitization.
Step 4: Query Execution: The database server executes the modified SQL query, including the attacker's injected code.
Step 5: Data Exfiltration/Manipulation: The attacker's SQL injection payload allows them to perform various actions, such as retrieving sensitive data (e.g., usernames, passwords, credit card details), modifying existing data, or even gaining control of the database server.
The vulnerability stems from a lack of proper input validation and sanitization of the ID parameter passed to the detail.asp script. The script directly incorporates the user-supplied ID value into an SQL query without any filtering or escaping. This allows an attacker to inject malicious SQL code, altering the intended query and potentially executing arbitrary commands against the database. The root cause is a failure to implement prepared statements or other secure methods for handling user input within SQL queries, leading to a classic SQL injection vulnerability. The absence of input validation is the primary flaw.
While no specific APT groups are directly linked to this CVE, the ease of exploitation makes it attractive to a wide range of attackers, including script kiddies and opportunistic attackers. The impact of this vulnerability aligns with the types of attacks often used by financially motivated threat actors. CISA KEV status is unlikely due to the age and specific nature of the affected software.
Web application firewall (WAF) logs showing suspicious SQL injection attempts, such as the use of single quotes, double dashes, or common SQL keywords (e.g., SELECT, UPDATE, INSERT, DELETE).
Database server logs revealing unusual query patterns or unexpected SQL commands.
Network traffic analysis identifying unusual HTTP requests to detail.asp with suspicious ID parameter values.
Intrusion Detection System (IDS) alerts triggered by known SQL injection signatures.
File integrity monitoring (FIM) to detect changes to critical ASP files, such as detail.asp.
Patching: Apply the vendor's security patch or update to the latest version of Site2Nite Vacation Rental (VRBO) Listings, if available. This is the most effective solution.
Input Validation: Implement robust input validation to sanitize and filter all user-supplied data, particularly the ID parameter. This includes whitelisting acceptable characters and lengths.
Prepared Statements: Use parameterized queries or prepared statements to prevent SQL injection. This separates the SQL code from the user-supplied data.
Least Privilege: Configure the database user used by the application with the least privileges necessary to perform its functions. This limits the impact of a successful SQL injection attack.
Web Application Firewall (WAF): Deploy a WAF to detect and block malicious SQL injection attempts.
Regular Security Audits: Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Code Review: Review the source code of detail.asp and other relevant files to identify and fix any other potential vulnerabilities.