Heap-Based Buffer Overflow in wolfMQTT by wolfSSL
CVE-2021-45938

5.5MEDIUM

Key Information:

Vendor

Wolfssl

Status
WolfMQtt
Vendor
CVE Published:
1 January 2022

What is CVE-2021-45938?

wolfMQTT version 1.9 by wolfSSL is susceptible to a heap-based buffer overflow vulnerability identified in the MqttClient_DecodePacket function. This issue arises during the handling of MQTT packets, specifically when called from MqttClient_WaitType and MqttClient_Unsubscribe. Exploitation of this vulnerability could lead to unauthorized access and code execution within affected applications, posing significant security risks.

References

https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa...
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https://github.com/google/oss-fuzz-vulns/blob/main/vulns/...
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39056
x_refsource_MISC

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

.