D-Link DIR-615 up to 20.12 Telnet Service hard-coded credentials

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in D-Link DIR-615 up to 20.12. Impacted is an unknown function of the component Telnet Service. Executing a manipulation with the input 0x1 BACKDOOR can lead to hard-coded credentials. This vulnerability appears as CVE-2017-11436. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in D-Link DIR-615 up to 20.12 (Router Operating System). It has been declared as critical. This vulnerability affects an unknown function of the component Telnet Service. The manipulation with the input value 0x1 BACKDOOR leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

D-Link DIR-615 before v20.12PTb04 has a second admin account with a 0x1 BACKDOOR value, which might allow remote attackers to obtain access via a TELNET connection.

The bug was discovered 06/20/2017. The weakness was presented 07/19/2017 (Website). The advisory is shared for download at ftp2.dlink.com. This vulnerability was named CVE-2017-11436 since 07/19/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1110.001.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version v20.12PTb04 eliminates this vulnerability.Proper firewalling of tcp/23 (telnet) is able to address this issue. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Hard-coded credentials
CWE: CWE-798 / CWE-259 / CWE-255
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: DIR-615 v20.12PTb04
Firewalling: 🔍

Timelineinfo

06/20/2017 🔍
07/19/2017 +29 days 🔍
07/19/2017 +0 days 🔍
07/19/2017 +0 days 🔍
07/19/2017 +0 days 🔍
10/27/2019 +830 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: ftp2.dlink.com
Status: Not defined

CVE: CVE-2017-11436 (🔍)
GCVE (CVE): GCVE-0-2017-11436
GCVE (VulDB): GCVE-100-103768

Entryinfo

Created: 07/19/2017 23:11
Updated: 10/27/2019 09:47
Changes: 07/19/2017 23:11 (62), 10/27/2019 09:47 (1)
Complete: 🔍
Cache ID: 216::103

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