hughsk flat up to 5.0.0 index.js unflatten prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.05

A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation with an unknown input leads to a prototype pollution vulnerability. CWE is classifying the issue as CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 12/25/2022 as 105. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2020-36632. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 5.0.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 20ef0ef55dfa028caddaedbcb33efbdb04d18e13 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.

The entries VDB-112516, VDB-129084, VDB-134645 and VDB-146795 are pretty similar.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

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: flat 5.0.1
Patch: 20ef0ef55dfa028caddaedbcb33efbdb04d18e13

Timelineinfo

12/25/2022 🔍
12/25/2022 +0 days 🔍
12/25/2022 +0 days 🔍
01/24/2023 +30 days 🔍

Sourcesinfo

Advisory: 105
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-36632 (🔍)
See also: 🔍

Entryinfo

Created: 12/25/2022 08:42 PM
Updated: 01/24/2023 10:51 AM
Changes: 12/25/2022 08:42 PM (44), 01/24/2023 10:44 AM (2), 01/24/2023 10:51 AM (1)
Complete: 🔍
Cache ID: 44:7FB:40

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