CVE-2018-19986 Command injection in n/a
Attackers can execute arbitrary commands on D-Link routers by injecting shell metacharacters into the RemotePort parameter of the SetRouterSettings message.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-19986?
CVE-2018-19986 is a critical command injection vulnerability in n/a, published on 13 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2018-19986?
It affects 2 products.
Products include D-Link Dir-818lw Firmware, D-Link Dir-822 Firmware.
How do I fix CVE-2018-19986?
No fix has been published for CVE-2018-19986 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2018-19986 being exploited?
There is no known exploitation of CVE-2018-19986 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-3phf-fpc4-v2qv.