Eclipse Paho MQTT C Client up to 1.0 readpacket rem_len out-of-bounds write

HistoryDiffrelatejsonxmlCTI

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.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Eclipse Paho MQTT C Client up to 1.0. This impacts the function readpacket. The manipulation of the argument rem_len leads to out-of-bounds write. This vulnerability is referenced as CVE-2021-41036. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Eclipse Paho MQTT C Client up to 1.0. It has been rated as critical. This issue affects the function readpacket. The manipulation of the argument rem_len with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 11/03/2021 as 96. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-41036 since 09/13/2021. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.1 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Eclipse

Name

Paho MQTT C Client

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Paho MQTT C Client 1.1

Timelineinfo

09/13/2021 🔍
11/03/2021 +51 days 🔍
11/03/2021 +0 days 🔍
11/06/2021 +3 days 🔍

Sourcesinfo

Advisory: 96
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-41036 (🔍)
GCVE (CVE): GCVE-0-2021-41036
GCVE (VulDB): GCVE-100-185975

Entryinfo

Created: 11/03/2021 10:03
Updated: 11/06/2021 19:17
Changes: 11/03/2021 10:03 (41), 11/06/2021 19:09 (2), 11/06/2021 19:17 (18)
Complete: 🔍
Cache ID: 216::103