CVE-2023-39553
Improper Input Validation vulnerability in apache-airflow (PyPI)
What is CVE-2023-39553 About?
This is an Improper Input Validation vulnerability in Apache Airflow Drill Provider prior to 2.4.3. It allows attackers to pass malicious parameters during DrillHook connection establishment, leading to arbitrary file reading on the Airflow server. Exploitation requires specific knowledge of how DrillHook handles parameters but does not necessarily need prior authentication to trigger the file reading once the connection attempt is made.
Affected Software
- apache-airflow
- <2.4.3
- apache-airflow-providers-apache-drill
- <2.4.3
Technical Details
The Apache Airflow Drill Provider, in versions before 2.4.3, fails to properly validate and sanitize user-supplied input when establishing a connection via DrillHook. Specifically, when defining a connection to Drill, certain parameters can be provided without sufficient vetting. An attacker can embed malicious constructs within these parameters, such as path traversal sequences (e.g., '..') or references to system files. When the DrillHook processes these parameters during connection setup, it might inadvertently interpret them as legitimate file paths or commands, causing the Airflow server to read and potentially expose the contents of arbitrary files within its accessible filesystem.
What is the Impact of CVE-2023-39553?
Successful exploitation may allow attackers to read arbitrary files on the Airflow server. This can lead to the disclosure of sensitive information, including configuration files, credentials, source code, and other private data, severely compromising the confidentiality of the system.
What is the Exploitability of CVE-2023-39553?
Exploitation of this vulnerability involves crafting malicious parameters to be supplied during the establishment of a DrillHook connection. The complexity is moderate, as it requires knowledge of the DrillHook's parameter handling and potential file system paths on the Airflow server. Authentication requirements are not explicitly stated, but typically, establishing a connection would require some form of access or prior knowledge, perhaps an authenticated session. The attack is remote, as it targets the Airflow server's handling of connection requests. Special conditions include knowing how to trigger the DrillHook connection functionality and crafting the correct malicious input to bypass validation. Risk factors include misconfigured Drill connections or inadequate input sanitization in the Drill Provider.
What are the Known Public Exploits?
| PoC Author | Link | Commentary |
|---|---|---|
| No known exploits | ||
What are the Available Fixes for CVE-2023-39553?
Available Upgrade Options
- apache-airflow-providers-apache-drill
- <2.4.3 → Upgrade to 2.4.3
- apache-airflow
- <2.4.3 → Upgrade to 2.4.3
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Book a demoAdditional Resources
- https://www.openwall.com/lists/oss-security/2023/08/11/1
- https://github.com/apache/airflow/commit/394a727ac2c18d58978bf186a7a92923460ec110
- http://www.openwall.com/lists/oss-security/2023/08/11/1
- https://osv.dev/vulnerability/PYSEC-2023-136
- https://osv.dev/vulnerability/GHSA-mq4v-6vg4-796c
- https://github.com/apache/airflow
- https://nvd.nist.gov/vuln/detail/CVE-2023-39553
- https://lists.apache.org/thread/ozpl0opmob49rkcz8svo8wkxyw1395sf
- http://www.openwall.com/lists/oss-security/2023/08/11/1
- https://github.com/apache/airflow/pull/33074
What are Similar Vulnerabilities to CVE-2023-39553?
Similar Vulnerabilities: CVE-2021-44228 , CVE-2020-13936 , CVE-2019-17558 , CVE-2017-15715 , CVE-2016-8740
