Multiple vulnerabilities in Medtronic MyCareLink



Published: 2020-12-14
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-25183
CVE-2020-25187
CVE-2020-27252
CWE-ID CWE-287
CWE-122
CWE-367
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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Smart Model 25000 Patient Reader
Mobile applications / Apps for mobile phones

Vendor Medtronic

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU48954

Risk: Medium

CVSSv3.1: 7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25183

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote attacker on the local network can use another mobile device or malicious application on the patient’s smartphone to bypass authentication process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Smart Model 25000 Patient Reader: before 5.2

External links

http://ics-cert.us-cert.gov/advisories/icsma-20-345-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

EUVDB-ID: #VU48955

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25187

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker on the local network can run a debug command, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Smart Model 25000 Patient Reader: before 5.2

External links

http://ics-cert.us-cert.gov/advisories/icsma-20-345-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Time-of-check Time-of-use (TOCTOU) Race Condition

EUVDB-ID: #VU48957

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27252

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a race condition in the MCL Smart Patient Reader software update system. A remote attacker on the local network can upload and execute unsigned firmware and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Smart Model 25000 Patient Reader: before 5.2

External links

http://ics-cert.us-cert.gov/advisories/icsma-20-345-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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