CVE-2017-2893 — HIGH (7.5) — White Hats Nepal

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cesanta	Mongoose	6.8

Related Weaknesses (CWE)

CWE-476

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0400ExploitTechnical DescriptionThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0400ExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2017-2893?

CVE-2017-2893 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2017-2893?

CVE-2017-2893 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-2893?

Check the references section above for vendor advisories and patch information. Affected products include: Cesanta Mongoose.