libcoap 4.3.4 coap_pdu.c integer 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
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5.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in libcoap 4.3.4. This affects an unknown part of the file coap_pdu.c. Executing a manipulation can lead to integer overflow. This vulnerability is handled as CVE-2024-31031. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in libcoap 4.3.4. This vulnerability affects an unknown code block of the file coap_pdu.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. The impact remains unknown. CVE summarizes:

An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior via a sequence of messages leading to unsigned integer overflow.

The advisory is available at github.com. This vulnerability was named CVE-2024-31031 since 03/27/2024. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/18/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

Version

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: Integer overflow
CWE: CWE-190 / CWE-189
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/27/2024 🔍
04/17/2024 +20 days 🔍
04/17/2024 +0 days 🔍
06/18/2025 +427 days 🔍

Sourcesinfo

Advisory: 1351
Status: Not defined

CVE: CVE-2024-31031 (🔍)
GCVE (CVE): GCVE-0-2024-31031
GCVE (VulDB): GCVE-100-261406

Entryinfo

Created: 04/17/2024 21:19
Updated: 06/18/2025 22:50
Changes: 04/17/2024 21:19 (50), 05/24/2024 13:24 (1), 05/24/2024 13:30 (1), 06/18/2025 22:50 (2)
Complete: 🔍
Cache ID: 216::103

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