CVE-2019-9949
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 execu…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Westerndigital | My Cloud Firmware | before 2.31.183 |
| Westerndigital | My Cloud Mirror Gen2 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Ex2 Ultra Firmware | before 2.31.183 |
| Westerndigital | My Cloud Ex2100 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Ex4100 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Dl2100 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Dl4100 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Pr2100 Firmware | before 2.31.183 |
| Westerndigital | My Cloud Pr4100 Firmware | before 2.31.183 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bnbdr.github.io/posts/wd/
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717
- https://github.com/bnbdr/wd-rce/
- https://bnbdr.github.io/posts/wd/
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717
- https://github.com/bnbdr/wd-rce/