Cross-site scripting in Jupyter Notebook

Published: 2018-11-18

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-19351 CVE-2018-19352
CWE-ID	CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Jupyter Notebook Client/Desktop applications / Office applications
Vendor	Jupyter

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU15943

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-19351

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in notebook/nbconvert/handlers.py. A remote attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Jupyter Notebook: 5.7.0

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Cross-site scripting

EUVDB-ID: #VU15944