Vulnerability Details CVE-2018-18764
An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in a parse_mqtt getu16 call. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.6%
CVSS Severity
CVSS v3 Score 9.1
CVSS v2 Score 6.4
References
- https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20getu16%20heap%20buffer%20overflow1.md
- https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20getu16%20heap%20buffer%20overflow2.md
- https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20getu16%20heap%20buffer%20overflow1.md
- https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20getu16%20heap%20buffer%20overflow2.md