VDB-106571 · CVE-2017-14420 · OpenVAS 103340

D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02 X.509 Certificate Verification certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02 and classified as problematic. This vulnerability affects unknown code of the component X.509 Certificate Verification. The manipulation leads to certificate validation. This vulnerability is documented as CVE-2017-14420. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02 (Router Operating System). This issue affects an unknown part of the component X.509 Certificate Verification. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality. The summary by CVE is:

The D-Link NPAPI extension, as used on D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) and REV. B (with firmware through FW208WWb02) devices, does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The bug was discovered 09/08/2017. The weakness was released 09/13/2017 (Website). It is possible to read the advisory at pierrekim.github.io. The identification of this vulnerability is CVE-2017-14420 since 09/13/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 11/15/2019). The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k.

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

Entries connected to this vulnerability are available at VDB-106564, VDB-106565, VDB-106566 and VDB-106567. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

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

NVD Base Score: 5.9
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: Certificate validation
CWE: CWE-295 / 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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OpenVAS ID: 103340
OpenVAS Name: D-Link 850L XSS / Backdoor / Code Execution Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/08/2017 🔍
09/13/2017 +5 days 🔍
09/13/2017 +0 days 🔍
09/13/2017 +0 days 🔍
09/14/2017 +1 days 🔍
11/15/2019 +792 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: pierrekim.github.io
Status: Not defined

CVE: CVE-2017-14420 (🔍)
GCVE (CVE): GCVE-0-2017-14420
GCVE (VulDB): GCVE-100-106571
See also: 🔍

Entryinfo

Created: 09/14/2017 09:00
Updated: 11/15/2019 20:47
Changes: 09/14/2017 09:00 (57), 11/15/2019 20:47 (7)
Complete: 🔍
Cache ID: 216::103

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

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