CVE-2017-2921 — CRITICAL (9.8)

Vulnerability Description

An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a heap buffer overflow and resulting in denial of service and potential remote code execution. An attacker needs to send a specially crafted websocket packet over network to trigger this vulnerability.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cesanta	Mongoose	6.8

Related Weaknesses (CWE)

CWE-190

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0428ExploitTechnical DescriptionThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0428ExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2017-2921?

CVE-2017-2921 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a...

How severe is CVE-2017-2921?

CVE-2017-2921 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2017-2921?

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