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jupyter/notebook · Security

Special Element Injection in notebook

GHSA ID
GHSA-hwvq-6gjx-j797
CVE ID
CVE-2021-32798
Severity
high
Published
Updated
CVSS
10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v3
10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v4
7.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Description

Impact

Untrusted notebook can execute code on load. This is a remote code execution, but requires user action to open a notebook.

Patches

5.7.11, 6.4.1

References

OWASP Page on Injection Prevention

For more information

If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list [email protected].

Credit: Guillaume Jeanne from Google

Example:

A notebook with the following content in a cell and it would display an alert when opened for the first time in Notebook (in an untrusted state):

{ "cell_type": "code", "execution_count": 0, "metadata": {}, "outputs": [ { "data": { "text/html": [ "<select><iframe></select><img src=x: onerror=alert('xss')>\n"], "text/plain": [] }, "metadata": {}, "output_type": "display_data" } ], "source": [ "" ] }

CWEs

  • CWE-75 · Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)
  • CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References