Critical · published March 25, 2019
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.
🚨 A sneaky server-side template injection in the Widget Connector macro can let attackers traverse paths and execute remote code on your Confluence Server! 🔥 Think of it like a restaurant where the chef blindly follows a corrupted recipe card — unwittingly preparing dishes that could poison the diners. This vulnerability allows attackers to instruct your server to serve up whatever code they choose, bypassing all safety measures! This is absolutely devastating! Attackers could gain full control of your Confluence Server or Data Center instance, potentially exposing sensitive data or causing significant disruptions. Once inside, they could read files, alter configurations, or even delete critical resources, leading to severe operational failures.
Think of it like a restaurant where the chef blindly follows a corrupted recipe card — unwittingly preparing dishes that could poison the diners. This vulnerability allows attackers to instruct your server to serve up whatever code they choose, bypassing all safety measures! CVE-2019-3396 exists because the Widget Connector macro in specific versions of Atlassian Confluence allows for a path traversal exploit through server-side template injection, enabling unauthorized access to files and remote code execution.
This is absolutely devastating! Attackers could gain full control of your Confluence Server or Data Center instance, potentially exposing sensitive data or causing significant disruptions. Once inside, they could read files, alter configurations, or even delete critical resources, leading to severe operational failures. Upgrade your Confluence Server to version 6.6.12 or 6.12.3 or 6.13.3 or 6.14.2, depending on your current version. It's crucial to audit your templates for potential vulnerabilities and implement strict input validation to prevent injections. You've got this! Follow these steps to protect your Confluence instance and keep your data safe. 🛡️