PT-2019-5830 · D Link · D-Link Dir-846

Published 2019-08-09 · Updated 2022-02-18 · CVE-2019-17509

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DIR-846 version 100A35

Description The issue is related to insufficient argument checking in the SetMasterWLanSettings function of the D-Link DIR-846 firmware, allowing remote attackers to execute arbitrary OS commands as root. This can be achieved by sending a specially crafted /HNAP1/ request for SetMasterWLanSettings with shell metacharacters to the /squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php script.

Recommendations For version 100A35, update the firmware to a version that addresses the issue with the SetMasterWLanSettings function, ensuring proper argument checking to prevent arbitrary command execution. As a temporary workaround, consider restricting access to the /squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php script to minimize the risk of exploitation.

Exploit

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2021-03215

CVE-2019-17509

Affected Products

D-Link Dir-846

References · 9

• 🔥 https://github.com/dahua966/Routers-vuls/blob/master/DIR-846/vuls_info.md · Exploit
• https://bdu.fstec.ru/vul/2021-03215 · Security Note
• https://osv.dev/vulnerability/CVE-2019-17509 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17509 · Security Note
• https://vuldb.com/?id.143409 · Note
• https://cvedetails.com/cve/CVE-2019-17509 · Note
• https://cxsecurity.com/cveshow/CVE-2019-17509 · Note
• https://t.me/cvenotify/26953 · Telegram Post
• https://t.me/cibsecurity/37680 · Telegram Post