Heap-Based Buffer Overflow in wolfMQTT by wolfSSL
CVE-2021-45937

5.5MEDIUM

Key Information:

Vendor

Wolfssl

Status
WolfMQtt
Vendor
CVE Published:
1 January 2022

What is CVE-2021-45937?

The vulnerability in wolfMQTT 1.9 involves a heap-based buffer overflow within the MqttClient_DecodePacket function, which is invoked by MqttClient_WaitType and MqttClient_Connect. This flaw can potentially allow attackers to exploit the software, leading to unauthorized access or other security breaches. It is crucial for users of this product to implement security patches and other measures to mitigate risks associated with this vulnerability.

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=39083
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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

.