D-Link DWR-921 /EXCU_SHELL GET Request input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.8$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in D-Link DAP-1530, DAP-1610, DWR-111, DWR-116, DWR-512, DWR-711, DWR-712 and DWR-921. This vulnerability affects unknown code of the file /EXCU_SHELL. This manipulation as part of GET Request causes input validation. This vulnerability is registered as CVE-2018-19300. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as very critical was found in D-Link DAP-1530, DAP-1610, DWR-111, DWR-116, DWR-512, DWR-711, DWR-712 and DWR-921. Affected by this vulnerability is some unknown functionality of the file /EXCU_SHELL. The manipulation as part of a GET Request leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

On D-Link DAP-1530 (All A revisions) before firmware version 1.06b01, DAP-1610 (All A revisions) before firmware version 1.06b01, DWR-111 (All A revisions) before firmware version 1.02v02, DWR-116 (All A revisions) before firmware version 1.06b03, DWR-512 (All B revisions) before firmware version 2.02b01, DWR-711 (All A revisions) through firmware version 1.11, DWR-712 (All B revisions) before firmware version 2.04b01, DWR-921 (All A revisions) before firmware version 1.02b01, and DWR-921 (All B revisions) before firmware version 2.03b01, there exists an EXCU_SHELL file in the web directory. By sending a GET request with specially crafted headers to the /EXCU_SHELL URI, an attacker could execute arbitrary shell commands in the root context on the affected device. Other devices might be affected as well.

The weakness was published 04/11/2019 (Website). The advisory is shared at eu.dlink.com. This vulnerability is known as CVE-2018-19300 since 11/15/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/29/2020).

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

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

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
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: Input validation
CWE: CWE-20
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

11/15/2018 🔍
04/11/2019 +147 days 🔍
04/11/2019 +0 days 🔍
05/29/2020 +414 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: eu.dlink.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-19300 (🔍)
GCVE (CVE): GCVE-0-2018-19300
GCVE (VulDB): GCVE-100-133345

Entryinfo

Created: 04/11/2019 20:51
Updated: 05/29/2020 09:33
Changes: 04/11/2019 20:51 (54), 05/29/2020 09:33 (1)
Complete: 🔍
Cache ID: 216::103

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

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