CVE-2020-36476

2021-08-2300:00:00

ubuntu.com

mbed tls

missing zeroization

plaintext buffers

memory exposure

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.003

Percentile

68.4%

JSON

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchmbedtls< anyUNKNOWN
ubuntu20.04noarchmbedtls< anyUNKNOWN
ubuntu16.04noarchmbedtls< anyUNKNOWN