Excessive memory allocation in Mosquitto <2.0.16 via non-CONNECT packets
CVE-2023-0809 Published on October 2, 2023
In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.
Vulnerability Analysis
CVE-2023-0809 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a Stack Exhaustion Vulnerability?
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
CVE-2023-0809 has been classified to as a Stack Exhaustion vulnerability or weakness.
Products Associated with CVE-2023-0809
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Affected Versions
Eclipse Mosquitto:- Before 2.0.16 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.