IETF IPv6 Pv4-in-IPv6 Tunneling/IPv6-in-IPv6 Tunneling verification of source

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in IETF IPv6. This vulnerability affects unknown code of the component Pv4-in-IPv6 Tunneling/IPv6-in-IPv6 Tunneling. Executing a manipulation can lead to verification of source. The identification of this vulnerability is CVE-2025-23018. The attack may be launched remotely. There is no exploit available. This vulnerability is historically impactful due to its background and the reception it garnered.

Detailsinfo

A vulnerability classified as critical was found in IETF IPv6 (version unknown). This vulnerability affects an unknown function of the component Pv4-in-IPv6 Tunneling/IPv6-in-IPv6 Tunneling. The manipulation with an unknown input leads to a verification of source vulnerability. The CWE definition for the vulnerability is CWE-940. The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136.

The advisory is shared for download at datatracker.ietf.org. This vulnerability was named CVE-2025-23018 since 01/10/2025. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/17/2025). This vulnerability has a historic impact due to its background and reception.

The vulnerability scanner Nessus provides a plugin with the ID 242166 (Juniper Junos OS Multiple Vulnerabilities (JSA100061)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the databases at Tenable (242166) and EUVD (EUVD-2025-3076). Additional details are provided at ispreview.co.uk. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.8
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (MITRE): 🔍

CVSSv2info

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

Exploitinginfo

Class: Verification of source
CWE: CWE-940
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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Nessus ID: 242166
Nessus Name: Juniper Junos OS Multiple Vulnerabilities (JSA100061)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/10/2025 🔍
01/14/2025 +4 days 🔍
01/14/2025 +0 days 🔍
07/17/2025 +184 days 🔍

Sourcesinfo

Advisory: datatracker.ietf.org
Status: Confirmed

CVE: CVE-2025-23018 (🔍)
GCVE (CVE): GCVE-0-2025-23018
GCVE (VulDB): GCVE-100-291844
EUVD: 🔍
Misc.: 🔍

Entryinfo

Created: 01/14/2025 22:52
Updated: 07/17/2025 03:04
Changes: 01/14/2025 22:52 (61), 01/16/2025 15:50 (3), 05/29/2025 06:19 (1), 07/17/2025 03:04 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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