Multiple vulnerabilities in Western Digital My Cloud OS 5

Published: 2022-02-18

Risk	High
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2022-22993 CVE-2022-22994 CVE-2022-22991 CVE-2022-22989 CVE-2022-22992 CVE-2022-22990
CWE-ID	CWE-918 CWE-345 CWE-77 CWE-121 CWE-287
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	My Cloud PR2100 Hardware solutions / Other hardware appliances My Cloud PR4100 Hardware solutions / Other hardware appliances My Cloud EX4100 Hardware solutions / Other hardware appliances My Cloud EX2 Ultra Hardware solutions / Other hardware appliances My Cloud Mirror Gen 2 Hardware solutions / Other hardware appliances My Cloud DL2100 Hardware solutions / Other hardware appliances My Cloud DL4100 Hardware solutions / Other hardware appliances My Cloud EX2100 Hardware solutions / Other hardware appliances WD My Cloud Hardware solutions / Office equipment, IP-phones, print servers My Cloud Hardware solutions / Office equipment, IP-phones, print servers My Cloud OS 5 Operating systems & Components / Operating system
Vendor	Western Digital

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU60709

Risk: Low

CVSSv3.1: 3.6 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22993

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the cgi_api endpoint. A remote user on the local network can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
http://www.zerodayinitiative.com/advisories/ZDI-22-348/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Insufficient verification of data authenticity

EUVDB-ID: #VU60714

Risk: Medium

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

CVE-ID: CVE-2022-22994

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

Exploit availability: No

Description

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

The vulnerability exists due to lack of proper authentication of data received via HTTP within the ConnectivityService service. A remote attacker on the local network can pass specially crafted data to the application 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

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117

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).

Is there known malware, which exploits this vulnerability?

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

3) Command Injection

EUVDB-ID: #VU60713

Risk: Medium

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

CVE-ID: CVE-2022-22991

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the ConnectivityService service. A remote attacker on the local network can pass specially crafted data to the application and execute arbitrary commands 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

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117

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).

Is there known malware, which exploits this vulnerability?

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

4) Stack-based buffer overflow

EUVDB-ID: #VU60712

Risk: Medium

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

CVE-ID: CVE-2022-22989

CWE-ID: CWE-121 - Stack-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 within the FTP service. A remote attacker on the local network can trigger stack-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

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117

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).

Is there known malware, which exploits this vulnerability?

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

5) Command Injection

EUVDB-ID: #VU60711

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22992

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands 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

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

6) Improper Authentication

EUVDB-ID: #VU60710

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22990

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 incorrect string matching logic when accessing protected pages within the nasAdmin service. A remote attacker on the local network can bypass authentication process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

My Cloud PR2100: All versions

My Cloud PR4100: All versions

My Cloud EX4100: All versions

My Cloud EX2 Ultra: All versions

My Cloud Mirror Gen 2: All versions

My Cloud DL2100: All versions

My Cloud DL4100: All versions

My Cloud EX2100: All versions

WD My Cloud: All versions

My Cloud: All versions

My Cloud OS 5: before 5.19.117

External links

http://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
http://www.zerodayinitiative.com/advisories/ZDI-22-347/

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).

Is there known malware, which exploits this vulnerability?

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