PT-2021-17775 · Hongdian · Hongdian H8922

Konstantin Burov + 1 · Published 2021-05-06 · Updated 2021-05-13 · CVE-2021-28149

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Hongdian H8922 version 3.0.5

Description: The issue allows Directory Traversal due to the /log download.cgi log export handler not validating user input. A remote attacker with minimal privileges can download any file from the device by substituting ../, for example, ../../etc/passwd. This can be carried out with a web browser by changing the file name accordingly, such as visiting /log download.cgi?type=../../etc/passwd and logging in, which allows the download of the contents of the /etc/passwd file.

Recommendations: For Hongdian H8922 version 3.0.5, as a temporary workaround, consider restricting access to the /log download.cgi endpoint until a patch is available. Avoid using the type parameter in the /log download.cgi endpoint with unvalidated input to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-28149

Affected Products

Hongdian H8922

References · 5

• 🔥 https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities · Exploit
• http://en.hongdian.com/Products/Details/H8922 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28149 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28149 · Vendor Advisory
• https://t.me/cvenotify/14409 · Telegram Post