CVE-2019-9950
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.30% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-521
- Affected
- westerndigital/my cloud firmware · westerndigital/my cloud mirror gen2 firmware · westerndigital/my cloud ex2 ultra firmware · westerndigital/my cloud ex2100 firmware · westerndigital/my cloud ex4100 firmware · westerndigital/my cloud dl2100 firmware · westerndigital/my cloud dl4100 firmware · westerndigital/my cloud pr2100 firmware · westerndigital/my cloud pr4100 firmware
- Source
- cve@mitre.org
References
- https://bnbdr.github.io/posts/wd/
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932Vendor Advisory
- https://github.com/bnbdr/wd-rce/
- https://support.wdc.com/downloads.aspx?g=2702&lang=enVendor Advisory
- https://bnbdr.github.io/posts/wd/
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932Vendor Advisory
- https://github.com/bnbdr/wd-rce/
- https://support.wdc.com/downloads.aspx?g=2702&lang=enVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.