CVE-2019-9949
HIGH 8.8EPSS 3.0%
Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi-bin/webfile_mgr.cgi file allows arbitrary file write by abusing symlinks. Specifically, this occurs by uploading a tar archive that contains a symbolic link, then uploading another archive that writes a file to the link using the "cgi_untar" command. Other commands might also be susceptible. Code can be executed because the "name" parameter passed to the cgi_unzip command is not sanitized.
- CVSS v3.0 NVD
- 8.8 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 9.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C - EPSS
- 3.00% chance of exploitation in the next 30 days, 87th percentile
- Published
- 2019-05-23
- Updated
- 2024-08-04
Proof-of-concept exploits (2)
- https://bnbdr.github.io/posts/wd/
- bnbdr/wd-rce/42★ · 2019-05-22
Security advisories
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237…
- https://bnbdr.github.io/posts/wd
- bnbdr/wd-rce