<p>Upgrade <code>Alpine:3.20</code> <code>mbedtls</code> to version 2.16.6-r0 or higher.</p>

Use of a Broken or Risky Cryptographic Algorithm Affecting mbedtls package, versions <2.16.6-r0

Threat Intelligence

0.06% (25^th percentile)

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Snyk ID SNYK-ALPINE320-MBEDTLS-7010193
published 23 May 2024
disclosed 15 Apr 2020

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Introduced: 15 Apr 2020

CVE-2020-10932 Open this link in a new tab CWE-327 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 mbedtls to version 2.16.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mbedtls package and not the mbedtls package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

High
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

None
Availability (A)

None