VDB-183891 · CVE-2021-3625 · GHSA-c3gr-hgvr-f363

zephyrproject-rtos 2.5.0 USB DFU DNLOAD 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.
9.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in zephyrproject-rtos 2.5.0. This issue affects some unknown processing of the component USB DFU DNLOAD. Performing a manipulation results in heap-based overflow. This vulnerability is identified as CVE-2021-3625. The attack can only be performed from the local network. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in zephyrproject-rtos 2.5.0 (Project Management Software). This affects an unknown functionality of the component USB DFU DNLOAD. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as 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(). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 10/06/2021 as GHSA-c3gr-hgvr-f363. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-3625 since 06/28/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/06/2021).

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Project Management Software

Name

zephyrproject-rtos

Version

2.5.0

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.2
VulDB Meta Temp Score: 9.2

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 9.6
CNA Vector (Zephyr Project): 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/28/2021 🔍
10/06/2021 +100 days 🔍
10/06/2021 +0 days 🔍
10/09/2021 +3 days 🔍

Sourcesinfo

Advisory: GHSA-c3gr-hgvr-f363
Status: Confirmed

CVE: CVE-2021-3625 (🔍)
GCVE (CVE): GCVE-0-2021-3625
GCVE (VulDB): GCVE-100-183891

Entryinfo

Created: 10/06/2021 11:53
Updated: 10/09/2021 13:36
Changes: 10/06/2021 11:53 (48), 10/09/2021 13:36 (1)
Complete: 🔍
Cache ID: 216::103