An issue was discovered in Ollama before 0.1.34. The CreateModelHandler function uses os.Open to read a file until completion. The req.Path parameter is user-controlled and can be set to /dev/random, which is blocking, causing the goroutine to run infinitely (even after the HTTP request is aborted by the client).

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-39721
• https://github.com/ollama/ollama/blob/9164b0161bcb24e543cba835a8863b80af2c0c21/server/routes.go#L557
• https://github.com/ollama/ollama/blob/adeb40eaf29039b8964425f69a9315f9f1694ba8/server/routes.go#L536
• https://oligosecurity.webflow.io/blog/more-models-more-probllms
• https://www.oligo.security/blog/more-models-more-probllms