published December 25, 2011
NVD has not assigned a CVSS score to this record. It sits in the 99.4th percentile for exploit probability.
⚠️ A single overly long URI is all it takes to trigger chaos! This stack-based buffer overflow in 3S CoDeSys could let remote attackers run arbitrary code on your ABB AC500 PLC. 🔥 Think of it like a hotel with a front desk that can't handle long guest names. If someone checks in with an excessively long name, it might just cause all sorts of mix-ups, letting them access rooms they shouldn’t! With this vulnerability, an attacker could potentially take control of the PLC, leading to unauthorized changes in automation processes. This could disrupt operations or even cause physical damage in certain industrial settings. It's an alarming scenario, as it could lead to costly downtime or safety hazards.
Think of it like a hotel with a front desk that can't handle long guest names. If someone checks in with an excessively long name, it might just cause all sorts of mix-ups, letting them access rooms they shouldn’t! The issue lies in the CmpWebServer component of CoDeSys, where a stack-based buffer overflow occurs due to insufficient input validation on TCP port 8080. This allows attackers to exploit the vulnerability by sending a long URI, resulting in arbitrary code execution.
With this vulnerability, an attacker could potentially take control of the PLC, leading to unauthorized changes in automation processes. This could disrupt operations or even cause physical damage in certain industrial settings. It's an alarming scenario, as it could lead to costly downtime or safety hazards. To secure your systems, patch to CoDeSys version 3.4 SP4 Patch 3 or later immediately. Also, consider implementing network-level access controls to restrict external access to TCP port 8080. Regularly review system configurations to ensure they adhere to security best practices. You've got this! With these steps, you'll be well on your way to fortifying your systems. 🛡️