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Vulnerability details: VCID-z3bp-5qjh-aaaj
Vulnerability ID VCID-z3bp-5qjh-aaaj
Aliases CVE-2020-36422
Summary An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-203 Observable Discrepancy
System Score Found at
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
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epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
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epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
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epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
epss 0.00279 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2020-36422
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-36422
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2020-36422
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2020-36422
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-36422
https://bugs.gentoo.org/730752
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36422
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2020-36422 https://nvd.nist.gov/vuln/detail/CVE-2020-36422
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36422
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36422
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-36422
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.35638
EPSS Score 0.00174
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.