CVE-2019-9949
23.05.2019, 14:29
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.
| Vendor | Product | Version |
|---|---|---|
| westerndigital | my_cloud_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_mirror_gen2_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_ex2_ultra_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_ex2100_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_ex4100_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_dl2100_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_dl4100_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_pr2100_firmware | 𝑥 < 2.31.183 |
| westerndigital | my_cloud_pr4100_firmware | 𝑥 < 2.31.183 |
𝑥
= Vulnerable software versions
References