Heap-based Buffer Overflow in wolfMQTT by wolfSSL
CVE-2021-45936

5.5MEDIUM

Key Information:

Vendor

Wolfssl

Status
WolfMQtt
Vendor
CVE Published:
1 January 2022

What is CVE-2021-45936?

wolfMQTT 1.9 contains a vulnerability characterized by a heap-based buffer overflow within the MqttDecode_Disconnect function, which is invoked from MqttClient_DecodePacket and MqttClient_WaitType. This flaw can potentially lead to unintended memory manipulation, posing significant risks to the integrity and confidentiality of applications utilizing this library.

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References

https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa...
x_refsource_MISC
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/...
x_refsource_MISC
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39053
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

JSON
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