CVE-2024-8063 — ollama
HIGHCVE-2024-8063 is a high-severity (CVSS 7.5) CWE-369 vulnerability in github.com/ollama/ollama. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
Divide by Zero in ollama/ollama
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-8063.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
github.com/ollama/ollamaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
A divide by zero vulnerability exists in ollama/ollama version v0.3.3. The vulnerability occurs when importing GGUF models with a crafted type for block_count in the Modelfile. This can lead to a denial of service (DoS) condition when the server processes the model, causing it to crash.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/ollama/ollama | all versions | No fix |
Affected Products
ollamaollamaDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/ollama/ollama, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of github.com/ollama/ollama for CVE-2024-8063. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Ansible LightSpeed does not use Ollama server. The library is included in the image just for local development or testing.
Implementing an input validation to check a valid model file formats before processing would help to mitigate this issue.Source: Red Hat security advisory for CVE-2024-8063 (CC BY 4.0)
Frequently Asked Questions
Is CVE-2024-8063 in your dependencies?
Find it across Go, including transitive dependencies.