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AVID-2026-R0025
Description
Denial of Service (DoS) in run-llama/llama_index (CVE-2024-12704)
Details
A vulnerability in the LangChainLLM class of the run-llama/llama_index repository, version v0.12.5, allows for a Denial of Service (DoS) attack. The stream_complete method executes the llm using a thread and retrieves the result via the get_response_gen method of the StreamingGeneratorCallbackHandler class. If the thread terminates abnormally before the _llm.predict is executed, there is no exception handling for this case, leading to an infinite loop in the get_response_gen function. This can be triggered by providing an input of an incorrect type, causing the thread to terminate and the process to continue running indefinitely.
References
- NVD entry
- https://huntr.com/bounties/a0b638fd-21c6-4ba7-b381-6ab98472a02a
- https://github.com/run-llama/llama_index/commit/d1ecfb77578d089cbe66728f18f635c09aa32a05
Affected or Relevant Artifacts
- Developer: run-llama
- Deployer: run-llama
- Artifact Details:
| Type | Name |
|---|---|
| System | run-llama/llama_index |
Impact
AVID Taxonomy Categorization
- Risk domains: Security
- SEP subcategories: S0100: Software Vulnerability
- Lifecycle stages: L06: Deployment
CVSS
| Version | 3.0 |
| Vector String | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Base Score | 7.5 |
| Base Severity | 🔴 High |
| Attack Vector | NETWORK |
| Attack Complexity | 🟢 Low |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | 🔴 High |
CWE
| ID | Description |
|---|---|
| CWE-835 | CWE-835 Loop with Unreachable Exit Condition |
Other information
- Report Type: Advisory
- Credits:
- Date Reported: 2025-03-20
- Version: 0.3.1
- AVID Entry