VDB-106577 · CVE-2017-14426 · OpenVAS 103340

D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02 Permission /var/etc/shadow Symlink access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02. This impacts an unknown function of the file /var/etc/shadow of the component Permission. The manipulation as part of Symlink leads to access control. This vulnerability is uniquely identified as CVE-2017-14426. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in D-Link DIR-850L up to FW114WWb07_h2ab_beta1/FW208WWb02 (Router Operating System). It has been rated as problematic. This issue affects some unknown functionality of the file /var/etc/shadow of the component Permission. The manipulation as part of a Symlink leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) and REV. B (with firmware through FW208WWb02) devices have 0644 /var/etc/shadow (aka the /etc/shadow symlink target) permissions.

The bug was discovered 09/08/2017. The weakness was disclosed 09/13/2017 (Website). The advisory is shared at pierrekim.github.io. The identification of this vulnerability is CVE-2017-14426 since 09/13/2017. An attack has to be approached locally. A simple authentication is required for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/15/2019). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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.

The entries VDB-106564, VDB-106565, VDB-106566 and VDB-106567 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best 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: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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-2017-14426 (🔍)
GCVE (CVE): GCVE-0-2017-14426
GCVE (VulDB): GCVE-100-106577
See also: 🔍

Entryinfo

Created: 09/14/2017 09:01
Updated: 11/15/2019 21:19
Changes: 09/14/2017 09:01 (59), 11/15/2019 21:19 (7)
Complete: 🔍
Cache ID: 216::103

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

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