CVE Vulnerability

CVE-2021-45939

wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Subscribe).

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1361.yaml Exploit Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39103 Exploit Issue Tracking
https://github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:wolfssl:wolfmqtt:1.9:*:*:*:*:*:*:*
Information

Published : 2022-01-01 01:15

Updated : 2022-01-11 09:22

NVD link : CVE-2021-45939

Mitre link : CVE-2021-45939

Products Affected
No products.
CWE
CWE-787