Platform
ruby
Component
activerecord
Fixed in
4.2.7.1
CVE-2016-6317 is a SQL injection vulnerability discovered in Active Record, a core component of the Ruby on Rails web application framework. This flaw allows attackers to bypass intended database query restrictions by exploiting inconsistencies in parameter handling between Active Record and the JSON implementation. Versions of Ruby on Rails prior to 4.2.7.1 are affected, and a fix is available in version 4.2.7.1.
Successful exploitation of CVE-2016-6317 could allow an attacker to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion. The vulnerability stems from Active Record's failure to properly handle NULL values in certain scenarios, allowing attackers to inject malicious SQL code. This could enable attackers to bypass authentication mechanisms, extract sensitive information (user credentials, financial data, personal details), or even gain control of the underlying database server. The impact is amplified in applications that rely heavily on Active Record for data persistence and validation, as a successful attack could compromise the entire application's integrity and confidentiality. This vulnerability shares similarities with previous SQL injection flaws in Rails (CVE-2012-2660, CVE-2012-2694, CVE-2013-0155), highlighting the ongoing need for careful input validation and secure coding practices.
CVE-2016-6317 was published on October 24, 2017. While no widespread active exploitation campaigns have been publicly reported, the vulnerability's potential impact and the relative ease of exploitation make it a persistent risk. The vulnerability is not currently listed on CISA KEV, but its severity warrants ongoing monitoring. Public proof-of-concept (POC) code may exist or emerge, increasing the likelihood of exploitation. The vulnerability's history, alongside similar SQL injection flaws in Rails, suggests that attackers may actively scan for vulnerable systems.
Exploit Status
EPSS
0.38% (59% percentile)
CVSS Vector
The primary mitigation for CVE-2016-6317 is to upgrade to Ruby on Rails version 4.2.7.1 or later. This version includes a fix that addresses the inconsistent parameter handling that leads to the SQL injection vulnerability. If upgrading is not immediately feasible, consider implementing temporary workarounds such as strict input validation and sanitization of all user-supplied data before it is used in database queries. Web application firewalls (WAFs) configured to detect and block SQL injection attempts can also provide an additional layer of protection. Review application code to identify any instances where user input is directly incorporated into SQL queries and implement parameterized queries or prepared statements to prevent SQL injection attacks. After upgrading, confirm the fix by attempting to reproduce the vulnerability with crafted requests containing NULL values and verifying that the queries are properly sanitized.
No official patch available. Check for workarounds or monitor for updates.
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CVE-2016-6317 is a SQL injection vulnerability in Ruby on Rails' Active Record component, allowing attackers to bypass database query restrictions through crafted requests with NULL values. It affects versions prior to 4.2.7.1.
You are affected if your Ruby on Rails application is running version 4.2.x prior to 4.2.7.1. Check your Rails version using ruby -e 'puts Rails.version_string'.
Upgrade your Ruby on Rails application to version 4.2.7.1 or later. This version includes the necessary fix to address the SQL injection vulnerability.
While no widespread active exploitation campaigns have been publicly reported, the vulnerability's potential impact and ease of exploitation make it a persistent risk. Monitor your systems and logs for suspicious activity.
Refer to the official Ruby on Rails security advisory: https://github.com/rails/rails/security/advisories/CVE-2016-6317
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