CVE-2021-23434

Public Exploit
Prototype Pollution

Description

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

Category

5.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory snyk.io Third-Party Advisory snyk.io
Affected: n/a object-path
Published at:
Updated at:

References

Link Tags
https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453 third party advisory exploit
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423 third party advisory exploit
https://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb third party advisory patch
https://github.com/mariocasciaro/object-path%230116 broken link
https://lists.debian.org/debian-lts-announce/2023/01/msg00031.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-23434?
CVE-2021-23434 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23434?
To fix CVE-2021-23434, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23434 being actively exploited in the wild?
It is possible that CVE-2021-23434 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-23434?
CVE-2021-23434 affects n/a object-path.
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