Auth bypass in Westerndigital My Cloud Pr4100
CVE-2017-17560
An issue was discovered on Western Digital MyCloud PR4100 2.30.172 devices. The web administration component, /web/jquery/uploader/multi_uploadify.php, provides multipart upload functionality that is accessible without authentication and can be used to place a file anywhere on the device's file system. This allows an attacker the ability to upload a PHP shell onto the device and obtain arbitrary code execution as root.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.734 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.641 · newest: 0.734 · change: +0.093
Affected products
- Westerndigital My Cloud Pr4100
- Westerndigital My Cloud Pr4100 Firmware — versions 2.30.172
Weakness classification (CWE)
Public proof-of-concept exploits
References
- download.exploitee.rs/file/generic/Exploiteers-DEFCON25.pdf (Exploit, Third Party Advisory)
- www.exploit-db.com/exploits/43356/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- github.com/rapid7/metasploit-framework/pull/9248 (Third Party Advisory)
Frequently asked questions
- What is CVE-2017-17560?
- CVE-2017-17560 is a critical-severity vulnerability in Westerndigital My Cloud Pr4100, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-12-12.
- How severe is CVE-2017-17560?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-17560 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.