PT-2020-2637 · Arm+2 · Mbed Tls+2

Published 2020-03-24 · Updated 2026-02-18 · CVE-2020-10941

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Arm Mbed TLS versions prior to 2.16.5

Description The issue allows attackers to obtain sensitive information, specifically an RSA private key, by measuring cache usage during an import. This is related to the implementation of TLS and SSL protocols in the Mbed TLS software, where the lack of encryption measures for protected data can be exploited. The exploitation can be done remotely.

Recommendations For versions prior to 2.16.5, update to version 2.16.5 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive information and implementing additional security measures to minimize the risk of exploitation.

Fix

Missing Encryption of Sensitive Data

Weakness Enumeration

CWE-311

Related Identifiers

ALT-PU-2020-2107

ALT-PU-2020-2355

BDU:2020-02674

CVE-2020-10941

DLA-3249-1

Affected Products

Alt Linux

Astra Linux

Mbed Tls

References · 17

• https://osv.dev/vulnerability/CVE-2020-10941 · Vendor Advisory
• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-02 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-10941 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-10941 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-10941 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WD6OSOLLAR2AVPJAMGUKWRXN6477IHHV · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-10941 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3249-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-10941 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10941 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02674 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5JPE2HFBDJF3UBT6Q4VWLKNKCVCMX25J · Vendor Advisory
• https://t.me/cvenotify/44858 · Telegram Post
• https://t.me/msrcreports/3055 · Telegram Post
• https://t.me/cvenotify/15542 · Telegram Post