PT-2020-16692 · Garmin · Connectiq+1

Dion Blazakis · Published 2020-11-16 · Updated 2020-12-02 · CVE-2020-27484

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Garmin Forerunner 235 versions prior to 8.20

Description The issue is related to an Integer Overflow in the ConnectIQ TVM component. To exploit this, an attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter fails to check for overflow when allocating the array for the NEWA instruction, resulting in a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.

Recommendations For Garmin Forerunner 235 versions prior to 8.20, update to version 8.20 or later to resolve the issue. As a temporary workaround, consider restricting the installation of ConnectIQ applications from untrusted sources to minimize the risk of exploitation.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2020-27484

Affected Products

Connectiq

Garmin Forerunner 235

References · 5

• 🔥 https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0004.md · Exploit
• https://osv.dev/vulnerability/CVE-2020-27484 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27484 · Security Note
• https://t.me/cibsecurity/16411 · Telegram Post
• https://t.me/cvenotify/5668 · Telegram Post