CVE-2021-43666

Public Exploit

Description

A Denial of Service vulnerability exists in mbed TLS 3.0.0 and earlier in the mbedtls_pkcs12_derivation function when an input password's length is 0.

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.12%

Third-Party Advisory github.com Third-Party Advisory debian.org

Affected: n/a n/a

References

Link	Tags
https://github.com/ARMmbed/mbedtls/issues/5136	issue tracking exploit third party advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-43666?: CVE-2021-43666 has been scored as a high severity vulnerability.
How to fix CVE-2021-43666?: To fix CVE-2021-43666, 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-2021-43666 being actively exploited in the wild?: It is possible that CVE-2021-43666 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.

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