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.

CVSS v3.1

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

CVSS v3.0

8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

2.42% chance of exploitation in the next 30 days, 83th percentile

Published

2017-11-07

Updated

2024-09-16

Proof-of-concept exploits (1)

• https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0428

References

• CVE Record
• NVD entry

Related

• CVE-2017-2918
• CVE-2017-2922
• CVE-2017-2917
• CVE-2017-2930
• CVE-2017-2916
• CVE-2017-2931