FiberHome VDSL2 Modem HG 150-UB Request improper authentication

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.
8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in FiberHome VDSL2 Modem HG 150-UB. It has been classified as critical. This affects an unknown function. Performing a manipulation as part of Request results in improper authentication. This vulnerability is reported as CVE-2018-9249. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in FiberHome VDSL2 Modem HG 150-UB (unknown version). It has been classified as critical. This affects an unknown code block. The manipulation as part of a Request leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FiberHome VDSL2 Modem HG 150-UB devices allow authentication bypass by ignoring the parent.location='login.html' JavaScript code in the response to an unauthenticated request.

The bug was discovered 04/03/2018. The weakness was disclosed 04/04/2018 (Website). It is possible to read the advisory at gist.github.com. This vulnerability is uniquely identified as CVE-2018-9249 since 04/03/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

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

The entry VDB-115826 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/03/2018 🔍
04/03/2018 +0 days 🔍
04/04/2018 +1 days 🔍
04/04/2018 +0 days 🔍
04/05/2018 +1 days 🔍
01/22/2020 +657 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2018-9249 (🔍)
GCVE (CVE): GCVE-0-2018-9249
GCVE (VulDB): GCVE-100-115827
See also: 🔍

Entryinfo

Created: 04/05/2018 08:49
Updated: 01/22/2020 11:41
Changes: 04/05/2018 08:49 (56), 01/22/2020 11:41 (1)
Complete: 🔍
Cache ID: 216::103

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

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