CVE-2018-4072 Missing authorization in Sierra Wireless

High 8.8 Published 6 May 2019 Updated 5 Aug 2024

Authenticated users can modify MSCII configuration values via the EmbeddedAceSet_Task.cgi endpoint due to missing authorization checks.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-4072?

CVE-2018-4072 is a high-severity missing authorization vulnerability in Sierra Wireless, published on 6 May 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. The EmbeddedAceSet_Task.cgi executable is used to change MSCII configuration values within the configuration manager of the AirLink ES450. This binary does not have any restricted configuration settings, so once the MSCIID is discovered, any authenticated user can send configuration changes using the /cgi-bin/Embedded_Ace_Set_Task.cgi endpoint.

Weakness: CWE-732

Which versions are affected by CVE-2018-4072?

It affects 1 product.

Products include Sierrawireless Airlink Es450 Firmware.

How do I fix CVE-2018-4072?

No fix has been published for CVE-2018-4072 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-4072 being exploited?

There is no known exploitation of CVE-2018-4072 in the wild and no public exploit code.

Sources

Also known as GHSA-583c-3965-f379.