D-Link DVA-2800/DSL-2888A 2.3 dhttpd path command injection

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CVSS Meta Temp Score
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CTI Interest Score
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8.8$5k-$25k0.00

A vulnerability classified as critical was found in D-Link DVA-2800 and DSL-2888A 2.3. This vulnerability affects an unknown functionality of the component dhttpd. The manipulation of the argument path with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-77. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DVA-2800 and DSL-2888A firmware version 2.3 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dhttpd service, which listens on TCP port 8008 by default. When parsing the path parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the web server. Was ZDI-CAN-10911.

The weakness was released 02/12/2021. The advisory is available at zerodayinitiative.com. This vulnerability was named CVE-2020-27862 since 10/27/2020. The exploitation appears to be easy. The attack can only be done within the local network. No form of authentication is required for a successful 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 02/28/2021).

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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VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-77
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

10/27/2020 CVE assigned
02/12/2021 +108 days Advisory disclosed
02/12/2021 +0 days VulDB entry created
02/28/2021 +16 days VulDB last update

Sourcesinfoedit

Vendor: https://www.dlink.com/

Advisory: zerodayinitiative.com
Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-27862 (🔒)

Entryinfoedit

Created: 02/12/2021 09:29 AM
Updated: 02/28/2021 10:33 AM
Changes: (17) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai source_cve_cna vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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