CVE-2022-29241: Known or guessable hidden files may be accessed in Jupyter Server
First published: Tue Jun 14 2022(Updated: )
Affects: Notebook and Lab between 6.4.0?(potentially earlier) and 6.4.11 (currently latest). Jupyter Server <=1.16.0. If I am correct about the responsible code it will affect Jupyter-Server 1.17.0 and 2.0.0a0 as well. Description: If notebook server is started with a value of `root_dir` that contains the starting user's home directory, then the underlying REST API can be used to leak the access token assigned at start time by guessing/brute forcing the PID of the jupyter server. While this requires an authenticated user session, this url can be used from an xss payload (as in CVE-2021-32798) or from a hooked or otherwise compromised browser to leak this access token to a malicious third party. This token can be used along with the REST API to interact with Jupyter services/notebooks such as modifying or overwriting critical files, such as .bashrc or .ssh/authorized_keys, allowing a malicious user to read potentially sensitive data and possibly gain control of the impacted system.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jupyter Jupyter Server | <1.17.0 | |
| pip/jupyter-server | =2.0.0a0 | 2.0.0a1 |
| pip/jupyter-server | >=0<1.17.1 | 1.17.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-q874-g24w-4q9g
- https://nvd.nist.gov/vuln/detail/CVE-2022-29241
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2022-211.yaml
- https://github.com/jupyter-server/jupyter_server/commit/3485007abbb459585357212dcaa20521989272e8
- https://github.com/jupyter-server/jupyter_server/commit/877da10cd0d7ae45f8b1e385fa1f5a335e7adf1f
- https://github.com/advisories/GHSA-q874-g24w-4q9g (Advisory)
Frequently Asked Questions
What is CVE-2022-29241?
CVE-2022-29241 is a vulnerability in Jupyter Server that allows an attacker to execute arbitrary code by exploiting a directory traversal vulnerability.
How does CVE-2022-29241 affect Jupyter Server?
CVE-2022-29241 affects Jupyter Server versions 1.16.0 and earlier, 1.17.0 and 2.0.0a0. It can potentially allow an attacker to execute arbitrary code if the server is started with a specific root directory.
What is the severity of CVE-2022-29241?
CVE-2022-29241 has a severity rating of 8.8 (Critical).
How can I fix CVE-2022-29241?
To fix CVE-2022-29241, update Jupyter Server to version 1.17.1 or later, or version 2.0.0a1 or later.
Where can I find more information about CVE-2022-29241?
You can find more information about CVE-2022-29241 in the following references: [GitHub Advisory](https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-q874-g24w-4q9g), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-29241), [PyPA Advisory Database](https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2022-211.yaml).
- collector/nvd-index
- collector/github-advisory-latest
- alias/GHSA-q874-g24w-4q9g
- alias/CVE-2022-29241
- collector/github-advisory
- collector/nvd-cve
- agent/author
- agent/type
- agent/softwarecombine
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/last-modified-date
- agent/title
- agent/severity
- agent/first-publish-date
- agent/description
- agent/event
- agent/trending
- agent/tags
- agent/source
- vendor/jupyter
- canonical/jupyter jupyter server
- package-manager/pip