Heap-Based Buffer Overflow in wolfMQTT by wolfSSL
CVE-2021-45932

5.5MEDIUM

Key Information:

Vendor
Wolfssl
Status
WolfMQtt
Vendor
CVE Published:
1 January 2022

Summary

A heap-based buffer overflow vulnerability exists in wolfMQTT 1.9 within the MqttDecode_Publish function, triggered during packet handling by MqttClient_DecodePacket and MqttClient_HandlePacket. By exploiting this flaw, attackers may potentially execute arbitrary code or cause a denial of service, compromising the integrity and availability of affected systems.

References

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/...
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37866
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https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa...
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CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.