D-Link DSL-3782 1.01 Diagnostics /userfs/bin/tcapi Diagnostics_Entry HTTP Request memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in D-Link DSL-3782 1.01. Impacted is the function Diagnostics_Entry of the file /userfs/bin/tcapi of the component Diagnostics. Such manipulation as part of HTTP Request leads to memory corruption. This vulnerability is referenced as CVE-2018-8941. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DSL-3782 1.01. Affected by this issue is the function Diagnostics_Entry of the file /userfs/bin/tcapi of the component Diagnostics. The manipulation as part of a HTTP Request leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Diagnostics functionality on D-Link DSL-3782 devices with firmware EU v. 1.01 has a buffer overflow, allowing authenticated remote attackers to execute arbitrary code via a long Addr value to the 'set Diagnostics_Entry' function in an HTTP request, related to /userfs/bin/tcapi.

The bug was discovered 04/03/2018. The weakness was published 04/03/2018 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2018-8941 since 03/22/2018. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 01/21/2020).

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

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: Memory corruption
CWE: CWE-119
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

03/22/2018 🔍
04/03/2018 +12 days 🔍
04/03/2018 +0 days 🔍
04/03/2018 +0 days 🔍
04/04/2018 +1 days 🔍
01/21/2020 +657 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2018-8941 (🔍)
GCVE (CVE): GCVE-0-2018-8941
GCVE (VulDB): GCVE-100-115670

Entryinfo

Created: 04/04/2018 08:27
Updated: 01/21/2020 09:31
Changes: 04/04/2018 08:27 (58), 01/21/2020 09:31 (1)
Complete: 🔍
Cache ID: 216::103

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Discussion

 william.brown (+1)
8 years ago
Firmware 1.01 firmware is considered legacy and no longer deployed. Please find the following links to updated firmware:

Release Notes: ftp://FTP2.DLINK.COM/SECURITY_ADVISEMENTS/DSL-3782/REVA/DSL-3782_REVA_FIRMWARE_RELEASE_NOTES_v1.03_EU_BETA.pdf

Firmware: ftp://FTP2.DLINK.COM/SECURITY_ADVISEMENTS/DSL-3782/REVA/DSL-3782_REVA_FIRMWARE_PATCH_v1.03_EU_BETA.zip

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