CVE-2020-27485

Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter fails to check the index provided when accessing the local variable in the LGETV and LPUTV instructions. This provides the ability to both read and write memory outside the bounds of the TVM context allocation. It can be leveraged to construct a use-after-free scenario, leading to 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.

CVSS v3.0 9.9 CRITICAL
CVSS v2.0 6.5 MEDIUM

9.9^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0005.md	Exploit Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:garmin:forerunner_235_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:garmin:forerunner_235:-:*:*:*:*:*:*:*

Information

Published : 2020-11-16 13:15

Updated : 2020-12-02 07:02

NVD link : CVE-2020-27485

Mitre link : CVE-2020-27485

JSON object : View

CWE

CWE-129

Improper Validation of Array Index

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Products Affected

garmin

forerunner_235
forerunner_235_firmware

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