CVE-2018-19990 Command injection in n/a
Attackers can execute arbitrary commands on D-Link DIR-822 routers via shell metacharacters in the WPSPIN parameter of the HNAP interface.
- 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-2018-19990?
CVE-2018-19990 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/SetWiFiVerifyAlpha message, the WPSPIN parameter is vulnerable, and the vulnerability affects D-Link DIR-822 B1 202KRb06 devices. In the SetWiFiVerifyAlpha.php source code, the WPSPIN parameter is saved in the $rphyinf1."/media/wps/enrollee/pin" and $rphyinf2."/media/wps/enrollee/pin" and $rphyinf3."/media/wps/enrollee/pin" internal configuration memory without any regex checking. And in the do_wps function of the wps.php source code, the data in $rphyinf3."/media/wps/enrollee/pin" is used with the wpatalk command without any regex checking. A vulnerable /HNAP1/SetWiFiVerifyAlpha XML message could have shell metacharacters in the WPSPIN element such as the `telnetd` string.
Weakness: CWE-78
Which versions are affected by CVE-2018-19990?
It affects 1 product.
Products include D-Link Dir-822 Firmware.
How do I fix CVE-2018-19990?
No fix has been published for CVE-2018-19990 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-2018-19990 being exploited?
There is no known exploitation of CVE-2018-19990 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gjhp-rrwf-m3px.