CVE-2019-9949
Western Digital My Cloud CGI-File Write and Code Execution Vulnerability
Description
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.
INFO
Published Date :
May 23, 2019, 2:29 p.m.
Last Modified :
May 29, 2019, 1:08 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2019-9949 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2019-9949
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-9949.
| URL | Resource |
|---|---|
| https://bnbdr.github.io/posts/wd/ | Exploit Third Party Advisory |
| https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717 | Vendor Advisory |
| https://github.com/bnbdr/wd-rce/ | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
WD My Cloud PoC exploit
rce exploit nas wd western-digital vulnerability
Python Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-9949 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-9949 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 29, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CVSS V3 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bnbdr.github.io/posts/wd/ No Types Assigned https://bnbdr.github.io/posts/wd/ Exploit, Third Party Advisory Changed Reference Type https://github.com/bnbdr/wd-rce/ No Types Assigned https://github.com/bnbdr/wd-rce/ Exploit, Third Party Advisory Changed Reference Type https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717 No Types Assigned https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-183-05-20-2019/237717 Vendor Advisory Added CWE CWE-59 Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_mirror_gen2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_mirror_gen2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_ex2_ultra_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_ex2100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_ex2100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_ex4100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_dl2100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_dl2100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_dl4100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_dl4100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_pr2100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:westerndigital:my_cloud_pr4100_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.31.183 OR cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 28, 2019
Action Type Old Value New Value Added Reference https://github.com/bnbdr/wd-rce/ [No Types Assigned] Added Reference https://bnbdr.github.io/posts/wd/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-9949 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-9949
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
2.04 }} 0.34%
score
0.88901
percentile