CVE-2020-36476

Description

An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory debian.org Third-Party Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 third party advisory release notes
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8 third party advisory release notes
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 third party advisory release notes
https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html third party advisory mailing list
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-2020-36476?
CVE-2020-36476 has been scored as a high severity vulnerability.
How to fix CVE-2020-36476?
To fix CVE-2020-36476, 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-2020-36476 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-36476 is being actively exploited. 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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