CVE-2018-19989 Command injection in n/a
Attackers can execute arbitrary commands on D-Link DIR-822 routers via shell metacharacters in the QoS uplink parameter.
- 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-2018-19989?
CVE-2018-19989 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/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability affects D-Link DIR-822 Rev.B 202KRb06 and DIR-822 Rev.C 3.10B06 devices. In the SetQoSSettings.php source code, the uplink parameter is saved in the /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth internal configuration memory without any regex checking. And in the bwc_tc_spq_start, bwc_tc_wfq_start, and bwc_tc_adb_start functions of the bwcsvcs.php source code, the data in /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth is used with the tc command without any regex checking. A vulnerable /HNAP1/SetQoSSettings XML message could have shell metacharacters in the uplink element such as the `telnetd` string.
Weakness: CWE-78
Which versions are affected by CVE-2018-19989?
It affects 2 products.
Products include D-Link Dir-822 Firmware, Dlink Dir-822 Firmware.
How do I fix CVE-2018-19989?
No fix has been published for CVE-2018-19989 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-2018-19989 being exploited?
There is no known exploitation of CVE-2018-19989 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-62vf-2f7p-wwr4.