MIT Lifelong Kindergarten Scratch scratch-vm prior 0.2.0-prerelease.20200714185213 serialization/sb3.js deserialization

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in MIT Lifelong Kindergarten Scratch scratch-vm and classified as critical. This affects an unknown function of the file serialization/sb3.js. The manipulation results in deserialization. This vulnerability is cataloged as CVE-2020-14000. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in MIT Lifelong Kindergarten Scratch scratch-vm. It has been classified as critical. Affected is an unknown code of the file serialization/sb3.js. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

MIT Lifelong Kindergarten Scratch scratch-vm before 0.2.0-prerelease.20200714185213 loads extension URLs from untrusted project.json files with certain _ characters, resulting in remote code execution because the URL's content is treated as a script and is executed as a worker. The responsible code is getExtensionIdForOpcode in serialization/sb3.js. The use of _ is incompatible with a protection mechanism in older versions, in which URLs were split and consequently deserialization attacks were prevented. NOTE: the scratch.mit.edu hosted service is not affected because of the lack of worker scripts.

The weakness was shared 07/16/2020 (GitHub Repository). The advisory is available at github.com. This vulnerability is traded as CVE-2020-14000 since 06/10/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 0.2.0-prerelease.20200714185213 eliminates this vulnerability.

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Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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: Lifelong Kindergarten Scratch scratch-vm 0.2.0-prerelease.20200714185213

Timelineinfo

06/10/2020 🔍
07/16/2020 +36 days 🔍
07/17/2020 +1 days 🔍
11/04/2020 +110 days 🔍

Sourcesinfo

Vendor: mit.edu

Advisory: github.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-14000 (🔍)
GCVE (CVE): GCVE-0-2020-14000
GCVE (VulDB): GCVE-100-158694

Entryinfo

Created: 07/17/2020 09:45
Updated: 11/04/2020 09:09
Changes: 07/17/2020 09:45 (38), 07/17/2020 09:50 (17), 11/04/2020 09:09 (1)
Complete: 🔍
Cache ID: 216::103

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