Vulnerability Description
In the /HNAP1/SetRouterSettings message, the RemotePort parameter is vulnerable, and the vulnerability affects D-Link DIR-818LW Rev.A 2.05.B03 and DIR-822 B1 202KRb06 devices. In the SetRouterSettings.php source code, the RemotePort parameter is saved in the $path_inf_wan1."/web" internal configuration memory without any regex checking. And in the IPTWAN_build_command function of the iptwan.php source code, the data in $path_inf_wan1."/web" is used with the iptables command without any regex checking. A vulnerable /HNAP1/SetRouterSettings XML message could have shell metacharacters in the RemotePort element such as the `telnetd` string.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| D-Link | Dir-818Lw Firmware | 2.05.b03 |
| Dlink | Dir-818Lw | - |
| D-Link | Dir-822 Firmware | 202krb06 |
| Dlink | Dir-822 | - |
Related Weaknesses (CWE)
References
- https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990ExploitThird Party Advisory
- https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990ExploitThird Party Advisory
FAQ
What is CVE-2018-19986?
CVE-2018-19986 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the /HNAP1/SetRouterSettings message, the RemotePort parameter is vulnerable, and the vulnerability affects D-Link DIR-818LW Rev.A 2.05.B03 and DIR-822 B1 202KRb06 devices. In the SetRouterSettings...
How severe is CVE-2018-19986?
CVE-2018-19986 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-19986?
Check the references section above for vendor advisories and patch information. Affected products include: D-Link Dir-818Lw Firmware, Dlink Dir-818Lw, D-Link Dir-822 Firmware, Dlink Dir-822.