AdGuard DNS up to 2.1 UDP Packet denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in AdGuard DNS up to 2.1. The impacted element is an unknown function of the component UDP Packet Handler. The manipulation leads to denial of service. This vulnerability is referenced as CVE-2023-41173. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in AdGuard DNS up to 2.1. This issue affects an unknown code of the component UDP Packet Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

AdGuard DNS before 2.2 allows remote attackers to cause a denial of service via malformed UDP packets.

The weakness was published 08/25/2023. The advisory is shared at adguard-dns.io. The identification of this vulnerability is CVE-2023-41173 since 08/24/2023. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 2.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-45690). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DNS 2.2

Timelineinfo

08/24/2023 🔍
08/25/2023 +1 days 🔍
08/25/2023 +0 days 🔍
02/01/2026 +891 days 🔍

Sourcesinfo

Advisory: adguard-dns.io
Status: Confirmed

CVE: CVE-2023-41173 (🔍)
GCVE (CVE): GCVE-0-2023-41173
GCVE (VulDB): GCVE-100-238025
EUVD: 🔍

Entryinfo

Created: 08/25/2023 09:29
Updated: 02/01/2026 05:59
Changes: 08/25/2023 09:29 (40), 09/20/2023 10:01 (11), 02/01/2026 05:59 (16)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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