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 denial of service and potential remote code execution. An attacker needs to send a specially crafted websocket packet over network to trigger this vulnerability.
Vulnerability class: Integer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.024 (84.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
- Cesanta Mongoose — versions 6.8
Weakness classification (CWE)
References
- www.talosintelligence.com/vulnerability_reports/TALOS-2017-0428 (Technical Description, Exploit, Third Party Advisory)
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.