CyberRota Analysis
AI-GeneratedMoquette, a lightweight Java MQTT broker, is vulnerable to a denial-of-service attack due to improper validation of shared-subscription filters, which can lead to a StringIndexOutOfBoundsException. This vulnerability can disrupt command handling on the shared session event loop, potentially affecting multiple client sessions. Organizations using versions prior to 0.18.1 should prioritize upgrading to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client can send a filter such as $share/grp without a topic-filter portion, causing a StringIndexOutOfBoundsException while calculating the share name. The exception terminates command handling on the shared session event loop and can deny service to other client sessions assigned to that loop. This issue is fixed in version 0.18.1.
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