What is CVE-2017-2921?

CVE-2017-2921 is a critical-severity vulnerability in Cesanta Mongoose, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2017-11-07.

How severe is CVE-2017-2921?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in Cesanta Mongoose

CVE-2017-2921

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…

Vulnerability class: Integer Overflow

EPSS: 0.021 (84.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cesanta Mongoose — versions 6.8

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

talos-cna@cisco.com (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2017-2921?: CVE-2017-2921 is a critical-severity vulnerability in Cesanta Mongoose, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2017-11-07.
How severe is CVE-2017-2921?: Critical severity. CVSS v3 base score is 9.8 out of 10.