Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQTT parser in rust/src/mqtt/mqtt.rs permits repeated PUBREC or PUBREL messages to be appended to one transaction without a limit. Crafted MQTT traffic can grow transaction state indefinitely, consuming CPU and memory and causing slowdown or denial of service.
This issue is fixed in versions 8.0.6 and 7.0.17.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 7
https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a
security-advisories@github.com
https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273
security-advisories@github.com
https://github.com/OISF/suricata/commit/c03666d261256df5a2d1f5800872da8a5addf6a5
security-advisories@github.com
https://github.com/OISF/suricata/releases/tag/suricata-7.0.17
security-advisories@github.com
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
security-advisories@github.com
https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p
security-advisories@github.com
https://redmine.openinfosecfoundation.org/issues/8525
security-advisories@github.com