Western Digital My Cloud prior 5.04.114 cgi_api.php access control

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CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

A vulnerability, which was classified as critical, was found in Western Digital My Cloud (Cloud Software). This affects an unknown functionality of the file cgi_api.php. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of privileges in Western Digital My Cloud NAS devices prior to 5.04.114.

The weakness was presented 10/28/2020. It is possible to read the advisory at westerndigital.com. This vulnerability is uniquely identified as CVE-2020-27158 since 10/15/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. The successful exploitation needs a authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 5.04.114 eliminates this vulnerability.

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VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

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VulDB Base Score: 🔒
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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: My Cloud 5.04.114

Timelineinfoedit

10/15/2020 CVE assigned
10/28/2020 +13 days Advisory disclosed
10/28/2020 +0 days VulDB entry created
11/29/2020 +32 days VulDB last update

Sourcesinfoedit

Advisory: westerndigital.com
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2020-27158 (🔒)

Entryinfoedit

Created: 10/28/2020 01:37 PM
Updated: 11/29/2020 05:50 PM
Changes: (18) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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