VDB-296737 · CVE-2025-1673 · GHSA-jjhx-rrh4-j8mx

zephyrproject-rtos Zephyr up to 4.0 resolve.c dns_validate_msg out-of-bounds

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.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in zephyrproject-rtos Zephyr up to 4.0. It has been rated as problematic. Affected by this issue is the function dns_validate_msg of the file subsys/net/lib/dns/resolve.c. This manipulation causes out-of-bounds. This vulnerability is tracked as CVE-2025-1673. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in zephyrproject-rtos Zephyr up to 4.0. It has been declared as problematic. Affected by this vulnerability is the function dns_validate_msg of the file subsys/net/lib/dns/resolve.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-1673 since 02/25/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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

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

Productinfo

Type

Project Management Software

Vendor

zephyrproject-rtos

Name

Zephyr

Version

License

open-source

Website

Product: https://github.com/zephyrproject-rtos/zephyr/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector (zephyr): 🔍

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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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

02/25/2025 🔍
02/25/2025 +0 days 🔍
02/25/2025 +0 days 🔍
02/28/2025 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-jjhx-rrh4-j8mx
Status: Confirmed

CVE: CVE-2025-1673 (🔍)
GCVE (CVE): GCVE-0-2025-1673
GCVE (VulDB): GCVE-100-296737
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/25/2025 10:17
Updated: 02/28/2025 11:51
Changes: 02/25/2025 10:17 (34), 02/25/2025 10:20 (34), 02/28/2025 11:51 (12)
Complete: 🔍
Committer: sany
Cache ID: 216::103