NTLMv2 hash disclosure in Jupyter Server

1) Information disclosure

EUVDB-ID: #VU99615

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-35178

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the application exposes the NTLMv2 password hash of the Windows user running. A remote attacker can obtain the hash and use it to compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Jupyter Server: 0.0.1 - 2.14.0

CPE2.3

• cpe:2.3:a:jupyter:jupyter_server:2.14.0:*:*:*:*:*:*:*
• cpe:2.3:a:jupyter:jupyter_server:2.13.0:*:*:*:*:*:*:*
• cpe:2.3:a:jupyter:jupyter_server:2.12.5:*:*:*:*:*:*:*

External links

http://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-hrw6-wg82-cm62
http://github.com/jupyter-server/jupyter_server/commit/79fbf801c5908f4d1d9bc90004b74cfaaeeed2df

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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