CVE-2021-23568

Published on: 01/07/2022 12:00:00 AM UTC

Last Modified on: 01/13/2022 07:58:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P

Certain versions of Extend2 from Eggjs contain the following vulnerability:

The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.

  • CVE-2021-23568 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as CRITICAL severity.

CVSS3 Score: 9.8 - CRITICAL

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 7.5 - HIGH

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
Prototype Pollution in extend2 | CVE-2021-23568 | Snyk snyk.io
text/html
URL Logo MISC snyk.io/vuln/SNYK-JS-EXTEND2-2320315
fix: __proto__ copy (#2) · eggjs/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8
fix: __proto__ copy by popomore · Pull Request #2 · eggjs/extend2 · GitHub github.com
text/html
URL Logo MISC github.com/eggjs/extend2/pull/2
extend2/index.js at master · eggjs/extend2 · GitHub github.com
text/html
URL Logo MISC github.com/eggjs/extend2/blob/master/index.js%23L50-L60

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationEggjsExtend2AllAllAllAll
  • cpe:2.3:a:eggjs:extend2:*:*:*:*:*:node.js:*:*:

Discovery Credit

Bob "Wombat" Hogg

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-23568 : The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due… twitter.com/i/web/status/1… 2022-01-07 20:12:59
Twitter Icon @Robo_Alerts Potentially Critical CVE Detected! CVE-2021-23568 Description: The package extend2 before 1.0.1 are vulnerable to P… twitter.com/i/web/status/1… 2022-01-07 20:56:16
Twitter Icon @WesUncensored New vulnerability on the NVD: CVE-2021-23568 ift.tt/3K8FrNl 2022-01-10 15:33:18
Twitter Icon @workentin New vulnerability on the NVD: CVE-2021-23568 ift.tt/3K8FrNl 2022-01-10 15:40:39
Reddit Logo Icon /r/netcve CVE-2021-23568 2022-01-07 20:38:55
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