CVE-2017-2893 Null dereference in Mongoose
A remote attacker can crash the Mongoose MQTT server by sending a specially crafted SUBSCRIBE packet, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-2893?
CVE-2017-2893 is a high-severity vulnerability in Cesanta Mongoose, published on 7 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable NULL pointer dereference vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. An MQTT SUBSCRIBE packet can cause a NULL pointer dereference leading to server crash and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.
Weakness: CWE-476
Which versions are affected by CVE-2017-2893?
It affects 1 product.
Products include Cesanta Mongoose.
How do I fix CVE-2017-2893?
Upgrade to a fixed version.
Is CVE-2017-2893 being exploited?
There is no known exploitation of CVE-2017-2893 in the wild and no public exploit code.
Other vulnerabilities in Cesanta Mongoose
Sources
Also known as DEBIAN-CVE-2017-2893, GHSA-rghw-3hw7-m66h.