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Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: Mlflow < 2.3.1 suffers from **Local File Read** via Path Traversal. π₯ **Consequences**: Attackers can access sensitive local files on the server, potentially leaking credentials, configs, or source code.β¦
π¦ **Affected**: **Mlflow** (mlflow/mlflow). π **Versions**: All versions **prior to 2.3.1**. If you are running 2.3.0 or earlier, you are vulnerable. π’ **Vendor**: Mlflow (Open Source ML Lifecycle Platform).
Q4What can hackers do? (Privileges/Data)
π **Attacker Actions**: Hackers can **read arbitrary local files** from the server's filesystem.β¦
βοΈ **Exploitation Threshold**: **Low to Medium**. The vulnerability relies on **Path Traversal**. It typically requires the attacker to have some level of access to the Mlflow UI or API to submit the malicious path.β¦
π **Public Exploit**: **Yes**. A PoC is available via **Nuclei Templates** (ProjectDiscovery). π **Link**: `https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-2780.yaml`.β¦
π **Self-Check**: Scan your infrastructure using **Nuclei** with the specific CVE template. π οΈ **Feature**: Look for requests containing `\..\` in file path parameters.β¦
β **Official Fix**: **Yes**. The vulnerability was fixed in **Mlflow 2.3.1**. π **Commit**: `fae77a525dd908c56d6204a4cef1c1c75b4e9857`. π **Mitigation**: Upgrade to version 2.3.1 or later immediately.β¦
π§ **No Patch Workaround**: If you cannot upgrade immediately: 1. **Restrict Access**: Ensure Mlflow is not exposed to the public internet. 2. **WAF Rules**: Block requests containing `\..\` or `../` in URL parameters.β¦
π₯ **Urgency**: **High**. Since a public PoC exists and it allows direct file reading, the risk of data exfiltration is immediate. π **Published**: May 17, 2023. β‘ **Priority**: Patch immediately if exposed.β¦