Bug 1651973 (CVE-2018-19351)

Summary:	CVE-2018-19351 python-notebook: XSS via an untrusted notebook
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	mhroncok
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	python-notebook 5.7.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:43:00 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1651976
Bug Blocks:

Description Andrej Nemec 2018-11-21 10:38:39 UTC

Jupyter Notebook before 5.7.1 allows XSS via an untrusted notebook because nbconvert responses are considered to have the same origin as the notebook server. In other words, nbconvert endpoints can execute JavaScript with access to the server API. In notebook/nbconvert/handlers.py, NbconvertFileHandler and NbconvertPostHandler do not set a Content Security Policy to prevent this.

References:

https://github.com/jupyter/notebook/blob/master/docs/source/changelog.rst
https://github.com/jupyter/notebook/commit/107a89fce5f413fb5728c1c5d2c7788e1fb17491
https://groups.google.com/forum/#!topic/jupyter/hWzu2BSsplY
https://pypi.org/project/notebook/#history

Comment 1 Andrej Nemec 2018-11-21 10:40:15 UTC

Created python-notebook tracking bugs for this issue:

Affects: fedora-all [bug 1651976]

Comment 2 Product Security DevOps Team 2019-06-10 10:43:00 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.