Vulnerability Monitor

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CVE-2020-36424

An issue was discovered in Arm Mbed TLS before 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.

Published

2021-07-19T17:15:11.277

Last Modified

2024-11-21T05:29:28.577

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

2.9

Weaknesses

Type: Primary
CWE-203

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	arm	mbed_tls	< 2.7.17	Yes
Application	arm	mbed_tls	< 2.16.8	Yes
Application	arm	mbed_tls	< 2.24.0	Yes
Operating System	debian	debian_linux	10.0	Yes

References

https://bugs.gentoo.org/740108 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8 Release Notes, Third Party Advisory ([email protected])
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 Release Notes, Third Party Advisory ([email protected])
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 Release Notes, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory ([email protected])
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2 Vendor Advisory ([email protected])
https://bugs.gentoo.org/740108 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)