Buttercup buttercup-browser-extension up to 0.14.2 Vault access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Buttercup buttercup-browser-extension up to 0.14.2. Affected by this issue is some unknown functionality of the component Vault Handler. This manipulation causes access control. This vulnerability only affects products that are no longer supported by the maintainer. The identification of this vulnerability is CVE-2017-20199. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Buttercup buttercup-browser-extension up to 0.14.2. Affected by this vulnerability is some unknown processing of the component Vault Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality.

The weakness was shared by Luke Childs as 92. The advisory is shared at github.com. This vulnerability is known as CVE-2017-20199. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 1.0.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 89 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2017-18917). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

Researcher Base Score: 6.5
Researcher Vector: 🔒

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 3.1
CNA Vector: 🔒

CVSSv2info

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

Researcher Base Score: 🔒

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

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: buttercup-browser-extension 1.0.1
Patch: 89

Timelineinfo

08/13/2025 Advisory disclosed
08/13/2025 +0 days VulDB entry created
08/27/2025 +14 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 92
Researcher: Luke Childs
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2017-20199 (🔒)
GCVE (CVE): GCVE-0-2017-20199
GCVE (VulDB): GCVE-100-319969
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/13/2025 18:28
Updated: 08/27/2025 18:53
Changes: 08/13/2025 18:28 (61), 08/16/2025 05:50 (30), 08/16/2025 13:45 (1), 08/18/2025 19:01 (20), 08/18/2025 19:04 (4), 08/19/2025 05:29 (1), 08/24/2025 07:19 (1), 08/27/2025 17:45 (11), 08/27/2025 18:52 (1), 08/27/2025 18:53 (1)
Complete: 🔍
Submitter: lukechilds
Committer: lukechilds
Cache ID: 216:81E:103

Submitinfo

Accepted

  • Submit #628170: Buttercup Password Manager Buttercup Browser Extension <=v0.14.2 Improper Access Control – Sensitive Data Exposure (CWE-284 / CWE (by lukechilds)

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

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