wolfSSL wolfMQTT 1.9 MqttClient_DecodePacket heap-based overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in wolfSSL wolfMQTT 1.9. This affects the function MqttClient_DecodePacket. Executing a manipulation can lead to heap-based overflow. This vulnerability is tracked as CVE-2021-45937. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as critical was found in wolfSSL wolfMQTT 1.9. This vulnerability affects the function MqttClient_DecodePacket. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is 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(). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 01/01/2022. The advisory is shared for download at bugs.chromium.org. This vulnerability was named CVE-2021-45937 since 12/31/2021. There are known technical details, but no exploit is available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

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
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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-2021-45937 (🔍)
GCVE (CVE): GCVE-0-2021-45937
GCVE (VulDB): GCVE-100-189532

Entryinfo

Created: 01/01/2022 10:33
Updated: 01/05/2022 14:06
Changes: 01/01/2022 10:33 (41), 01/05/2022 14:06 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!