Buffer overflow in Western Digital My Cloud Ex2 Ultra
CVE-2019-18930
Western Digital My Cloud EX2 Ultra firmware 2.31.183 allows web users (including guest account) to remotely execute arbitrary code via a stack-based buffer overflow. There is no size verification logic in one of functions in libscheddl.so, and download_mgr.cgi makes it possible to enter large-sized f_idx inputs.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Western Digital My Cloud Ex2 Ultra
- Western Digital My Cloud Ex2 Ultra Firmware — versions 2.31.183
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/DelspoN/CVE/blob/master/CVE-2019-18930/description.txt (Third Party Advisory)
- github.com/DelspoN/CVE/tree/master/CVE-2019-18930 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-18930?
- CVE-2019-18930 is a high-severity vulnerability in Western Digital My Cloud Ex2 Ultra, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-11-13.
- How severe is CVE-2019-18930?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2019-18930 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.