Denial of Service Vulnerability in LangChainLLM Class of Run-Llama Repository
CVE-2024-12704

7.5HIGH

Key Information:

Vendor

Run-llama

Status
Run-llama/llama Index
Vendor
CVE Published:
20 March 2025

What is CVE-2024-12704?

A vulnerability exists in the LangChainLLM class of the run-llama/llama_index repository, specifically in version v0.12.5. The issue arises from the stream_complete method, which utilizes a thread to execute the llm and subsequently retrieves the results through the get_response_gen method of the StreamingGeneratorCallbackHandler class. If the thread experiences an abnormal termination before executing the _llm.predict method, it leads to a lack of exception handling, potentially causing the get_response_gen function to enter an infinite loop. This vulnerability can be exploited by supplying incorrect input types, leading to persistent denial of service.

Affected Version(s)

run-llama/llama_index < 0.12.6

References

https://huntr.com/bounties/a0b638fd-21c6-4ba7-b381-6ab984...
https://github.com/run-llama/llama_index/commit/d1ecfb775...

CVSS V3.0

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.