CVE-2018-4073 Missing authorization in Sierra Wireless

High 8.8 Published 6 May 2019 Updated 5 Aug 2024

An authenticated attacker can arbitrarily modify system settings via the EmbeddedAceSet_Task.cgi endpoint, potentially escalating privileges or altering device configuration.

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-2018-4073?

CVE-2018-4073 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 the binary the endpoint /cgi-bin/Embeded_Ace_TLSet_Task.cgi is a very similar endpoint that is designed for use with setting table values that can cause an arbitrary setting writes, resulting in the unverified changes to any system setting. An attacker can make an authenticated HTTP request, or run the binary as any user, to trigger this vulnerability.

Weakness: CWE-732

Which versions are affected by CVE-2018-4073?

It affects 1 product.

Products include Sierrawireless Airlink Es450 Firmware.

How do I fix CVE-2018-4073?

No fix has been published for CVE-2018-4073 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-2018-4073 being exploited?

There is no known exploitation of CVE-2018-4073 in the wild and no public exploit code.

Sources

Also known as GHSA-4mhq-mfhv-hjcw.