Jupyter Server up to 2.7.1 Login Link redirect

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Jupyter Server up to 2.7.1. This issue affects some unknown processing of the component Login Link Handler. Such manipulation leads to redirect. This vulnerability is referenced as CVE-2023-39968. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Jupyter Server up to 2.7.1. It has been rated as problematic. Affected by this issue is an unknown part of the component Login Link Handler. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

jupyter-server is the backend for Jupyter web applications. Open Redirect Vulnerability. Maliciously crafted login links to known Jupyter Servers can cause successful login or an already logged-in session to be redirected to arbitrary sites, which should be restricted to Jupyter Server-served URLs. This issue has been addressed in commit `29036259` which is included in release 2.7.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was published 08/29/2023 as GHSA-r726-vmfq-j9j3. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-39968 since 08/07/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1204.001.

Upgrading to version 2.7.2 eliminates this vulnerability. Applying the patch 290362593b2ffb23c59f8114d76f77875de4b925 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 2.7.2
Patch: 290362593b2ffb23c59f8114d76f77875de4b925

Timelineinfo

08/07/2023 🔍
08/29/2023 +22 days 🔍
08/29/2023 +0 days 🔍
09/22/2023 +24 days 🔍

Sourcesinfo

Advisory: GHSA-r726-vmfq-j9j3
Status: Confirmed

CVE: CVE-2023-39968 (🔍)
GCVE (CVE): GCVE-0-2023-39968
GCVE (VulDB): GCVE-100-238220

Entryinfo

Created: 08/29/2023 07:25
Updated: 09/22/2023 08:49
Changes: 08/29/2023 07:25 (52), 09/22/2023 08:49 (11)
Complete: 🔍
Cache ID: 216::103

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