Bitcoin Core up to 0.18.x bitcoin-qt platformpluginpath state issue

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CVSS Meta Temp Score
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6.0$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Bitcoin Core up to 0.18.x. Affected by this issue is an unknown functionality of the component bitcoin-qt. The manipulation of the argument platformpluginpath with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-371. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Bitcoin Core before 0.19.0 might allow remote attackers to execute arbitrary code when another application unsafely passes the -platformpluginpath argument to the bitcoin-qt program, as demonstrated by an x-scheme-handler/bitcoin handler for a .desktop file or a web browser. NOTE: the discoverer states "I believe that this vulnerability cannot actually be exploited."

The weakness was shared 02/04/2021. The advisory is shared for download at achow101.com. This vulnerability is handled as CVE-2021-3401 since 02/04/2021. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 0.19.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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CVSSv3infoedit

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

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

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-371
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Bitcoin Core 0.19.0
Patch: github.com

Timelineinfoedit

02/04/2021 Advisory disclosed
02/04/2021 +0 days CVE assigned
02/04/2021 +0 days VulDB entry created
02/23/2021 +19 days VulDB last update

Sourcesinfoedit

Advisory: achow101.com
Status: Confirmed

CVE: CVE-2021-3401 (🔒)

Entryinfoedit

Created: 02/04/2021 10:56 AM
Updated: 02/23/2021 02:01 PM
Changes: (5) source_cve_assigned source_cve_nvd_summary vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
Complete: 🔍

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