Vulnerability Details : CVE-2021-28149
Potential exploit
Hongdian H8922 3.0.5 devices allow Directory Traversal. The /log_download.cgi log export handler does not validate user input and allows a remote attacker with minimal privileges to download any file from the device by substituting ../ (e.g., ../../etc/passwd) This can be carried out with a web browser by changing the file name accordingly. Upon visiting log_download.cgi?type=../../etc/passwd and logging in, the web server will allow a download of the contents of the /etc/passwd file.
Vulnerability category: Directory traversal
Products affected by CVE-2021-28149
- cpe:2.3:o:hongdian:h8922_firmware:3.0.5:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28149
83.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 99 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28149
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-28149
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28149
-
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/
SSD Advisory – Hongdian H8922 Multiple Vulnerabilities - SSD Secure DisclosureExploit;Third Party Advisory
-
http://en.hongdian.com/Products/Details/H8922
LTE industrial routerProduct;Vendor Advisory
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