wolfSSL wolfMQTT 1.9 MqttDecode_Disconnect heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in wolfSSL wolfMQTT 1.9 and classified as critical. This affects the function MqttDecode_Disconnect. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2021-45936. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in wolfSSL wolfMQTT 1.9. It has been rated as critical. This issue affects the function MqttDecode_Disconnect. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was released 01/01/2022 as 84d4b53122e0fa0280c7872350b89d5777dabbb2. The advisory is shared at bugs.chromium.org. The identification of this vulnerability is CVE-2021-45936 since 12/31/2021. Technical details are known, but no exploit is available.

Applying the patch 84d4b53122e0fa0280c7872350b89d5777dabbb2 is able to eliminate this problem. The bugfix is ready for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 84d4b53122e0fa0280c7872350b89d5777dabbb2

Timelineinfo

12/31/2021 🔍
01/01/2022 +1 days 🔍
01/01/2022 +0 days 🔍
01/05/2022 +4 days 🔍

Sourcesinfo

Product: github.com

Advisory: 84d4b53122e0fa0280c7872350b89d5777dabbb2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-45936 (🔍)
GCVE (CVE): GCVE-0-2021-45936
GCVE (VulDB): GCVE-100-189521

Entryinfo

Created: 01/01/2022 10:25
Updated: 01/05/2022 13:00
Changes: 01/01/2022 10:25 (42), 01/05/2022 13:00 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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