Western Digital My Cloud PR4100 prior 2.31.174 login_mgr.cgi Empty Password improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud DL2100, My Cloud DL4100, My Cloud PR2100 and My Cloud PR4100. This impacts an unknown function of the file login_mgr.cgi. Executing a manipulation as part of Empty Password can lead to improper authentication. The identification of this vulnerability is CVE-2019-9950. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud DL2100, My Cloud DL4100, My Cloud PR2100 and My Cloud PR4100 (Cloud Software). It has been declared as critical. This vulnerability affects an unknown functionality of the file login_mgr.cgi. The manipulation as part of a Empty Password leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud DL2100, My Cloud DL4100, My Cloud PR2100 and My Cloud PR4100 firmware before 2.31.174 is affected by an authentication bypass vulnerability. The login_mgr.cgi file checks credentials against /etc/shadow. However, the "nobody" account (which can be used to access the control panel API as a low-privilege logged-in user) has a default empty password, allowing an attacker to modify the My Cloud EX2 Ultra web page source code and obtain access to the My Cloud as a non-Admin My Cloud device user.

The bug was discovered 03/27/2019. The weakness was shared 04/24/2019 (Website). The advisory is shared for download at community.wd.com. This vulnerability was named CVE-2019-9950 since 03/23/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 28 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.31.174 eliminates this vulnerability.

The entry VDB-134045 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: My Cloud/My Cloud Mirror Gen2/My Cloud EX2 Ultra/My Cloud EX2100/My Cloud EX4100/My Cloud DL2100/My Cloud DL4100/My Cloud PR2100/My Cloud PR4100 2.31.174

Timelineinfo

03/23/2019 🔍
03/27/2019 +4 days 🔍
04/24/2019 +28 days 🔍
04/25/2019 +1 days 🔍
06/02/2020 +404 days 🔍

Sourcesinfo

Advisory: community.wd.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-9950 (🔍)
GCVE (CVE): GCVE-0-2019-9950
GCVE (VulDB): GCVE-100-134044
See also: 🔍

Entryinfo

Created: 04/25/2019 09:05
Updated: 06/02/2020 09:27
Changes: 04/25/2019 09:05 (59), 06/02/2020 09:27 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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