AWS Kiro Flaw Let a Poisoned Web Page Rewrite Its Config and Run Code
AWS Kiro flaw allowed poisoned web pages to rewrite config and execute code.
A vulnerability in AWS's Kiro coding IDE allowed attackers to execute arbitrary code on developer machines by embedding hidden text on a web page. This hidden text could trick Kiro into rewriting its configuration file, leading to the execution of malicious commands without user approval. AWS has since patched the issue.
AI summary of the linked source. Not reviewed by an editor. How this works
Run AWS?
Get an email when a new story names AWS, usually within the hour.
Free. Your list stays private and never appears in a subject line. One click stops it. How Vendor Watch worksPrivacy
The lesson from this incident
Full lessonThe AWS Kiro vulnerability stemmed from a prompt injection attack, where hidden text embedded in a web page could manipulate the AI-assisted IDE into rewriting its configuration file and executing arbitrary commands without user consent. This is a critical failure in configuration integrity — the IDE lacked sufficient validation to distinguish between legitimate user instructions and adversarially crafted external input. The attack required no special permissions; simply visiting a malicious web page was enough to compromise a developer's machine. This matters greatly because developer workstations are high-value targets that often have broad access to source code, cloud credentials, and CI/CD pipelines. A single compromised developer environment can cascade into a full supply chain breach.
What helps against this
How we list vendors
- Application allowlisting
Any program that reaches a computer can run, including ransomware and the remote-access tools attackers bring with them.
- Endpoint detection and response (EDR and XDR)
Malware and hands-on-keyboard attackers on laptops and servers get spotted and stopped.
- AI application security
Prompt injection, data leaks through AI tools and unapproved AI use get caught.
Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- url — http://localhost