Is "MasterPassword for chrome" on Chrome Web Store Safe to Install?

[email protected] · chrome · v3.0.0

One of todays main security challenges on the web is passwords. You typically have to login at many different sites, and remembering a different password for every site is hard. Unfortunately one of the sites you use will sooner or later be hacked, and passwords leaked. If that password is reused on other sites, the hackers will have access to all your accounts. MasterPassword can help. With one master password, a unique one can be generated for each site. When you need to login, this addon will complete the site password for you. And it is impossible to guess the master password from a site password. Read more at http://masterpasswordapp.com The MasterPassword algorithm is standardized. You can find app's for Ios, Android, Windows, Mac and Linux. One of MasterPasswords strong points is that neither the master or site password is stored anywhere. The site password is rather generated mathematically every time. This is in clear contrast to many other password managers, like Chrome's built in password manager. If your computer or browser is hacked, solutions where the password is stored can give away all your passwords! Similar dangers exists with cloud based solutions. The MasterPassword addon can of course co exist with other password managers and will stay out of your way until you click the MasterPassword button. If you chose to uninstall the addon, you'll just have to remember the passwords you've generated, or import them into another password manager. Since passwords in MasterPassword are mathematically generated, it is impossible to import other custom passwords into master password. They would have to be stored on your computer, which defeats MasterPassword's working principle. As such, it is convenient to use the Chrome password manager for such passwords, until you find a time to switch a site to MasterPassword. Also note that when MasterPassword enters a password for you, Chrome will behave like you typed it on the keyboard, and prompt you if you want to save it. You can of course accept this, but your passwords will then be stored and risk being stolen. I'd therefore suggest to reject that offer. Protect your accounts on the web - Use MasterPassword

Risk Assessment

Analyzed
64.96
out of 100
MEDIUM

147 security findings detected across all analyzers

Chrome extension requesting 6 permissions

Severity Breakdown

0
Critical
50
High
97
Medium
0
Low
0
Info

Finding Categories

50
Malware Signatures
1
Obfuscation
1
Network
91
IoC Indicators

YARA Rules Matched

7 rules(50 hits)
postinstall file manipulation postinstall file download postinstall crypto operations postinstall obfuscation NoUseEval postinstall network communication postinstall system command

Requested Permissions

6 permissions
nativeMessaging

Exchange messages with programs outside the browser

Dangerous
activeTab
Medium
scripting
Low
clipboardWrite
Low
storage
Low
alarms
Low

About This Extension

One of todays main security challenges on the web is passwords. You typically have to login at many different sites, and remembering a different password for every site is hard. Unfortunately one of the sites you use will sooner or later be hacked, and passwords leaked. If that password is reused on other sites, the hackers will have access to all your accounts. MasterPassword can help. With one master password, a unique one can be generated for each site. When you need to login, this addon will complete the site password for you. And it is impossible to guess the master password from a site password. Read more at http://masterpasswordapp.com The MasterPassword algorithm is standardized. You can find app's for Ios, Android, Windows, Mac and Linux. One of MasterPasswords strong points is that neither the master or site password is stored anywhere. The site password is rather generated mathematically every time. This is in clear contrast to many other password managers, like Chrome's built in password manager. If your computer or browser is hacked, solutions where the password is stored can give away all your passwords! Similar dangers exists with cloud based solutions. The MasterPassword addon can of course co exist with other password managers and will stay out of your way until you click the MasterPassword button. If you chose to uninstall the addon, you'll just have to remember the passwords you've generated, or import them into another password manager. Since passwords in MasterPassword are mathematically generated, it is impossible to import other custom passwords into master password. They would have to be stored on your computer, which defeats MasterPassword's working principle. As such, it is convenient to use the Chrome password manager for such passwords, until you find a time to switch a site to MasterPassword. Also note that when MasterPassword enters a password for you, Chrome will behave like you typed it on the keyboard, and prompt you if you want to save it. You can of course accept this, but your passwords will then be stored and risk being stolen. I'd therefore suggest to reject that offer. Protect your accounts on the web - Use MasterPassword

Detailed Findings

53 total

YARA Rule Matches

7 rules

Indicators of Compromise

Network indicators, suspicious strings, and potential IoCs extracted during analysis

URLs
20
IP Addresses
8
Domains
70
Strings
91

All Indicators · 91

IP
detected IP: ::

XIOC detected IP: ::

extracted_from_files

URL
detected URL: https://github.com/ttyridal/masterpassword-firefox/wiki/Webextensions

XIOC detected URL: https://github.com/ttyridal/masterpassword-firefox/wiki/Webextensions

extracted_from_files

URL
detected URL: http://scripts.sil.org/OFL

XIOC detected URL: http://scripts.sil.org/OFL

extracted_from_files

URL
detected URL: https://en.wikipedia.org/wiki/Master_Password_(algorithm)

XIOC detected URL: https://en.wikipedia.org/wiki/Master_Password_(algorithm)

extracted_from_files

URL
detected URL: http://www.lhunath.com/

XIOC detected URL: http://www.lhunath.com/

extracted_from_files

URL
detected URL: https://torbjorn.tyridal.no

XIOC detected URL: https://torbjorn.tyridal.no

extracted_from_files

URL
detected URL: http://fontawesome.io

XIOC detected URL: http://fontawesome.io

extracted_from_files

URL
detected URL: https://spectre.app/blog/2021-02-04-whats-a-password/

XIOC detected URL: https://spectre.app/blog/2021-02-04-whats-a-password/

extracted_from_files

URL
detected URL: http://fontawesome.io/license

XIOC detected URL: http://fontawesome.io/license

extracted_from_files

URL
detected URL: http://stevenlevithan.com

XIOC detected URL: http://stevenlevithan.com

extracted_from_files

URL
detected URL: http://blog.stevenlevithan.com/archives/parseuri-split-url

XIOC detected URL: http://blog.stevenlevithan.com/archives/parseuri-split-url

extracted_from_files

URL
detected URL: https://en.wikipedia.org/wiki/ASCII

XIOC detected URL: https://en.wikipedia.org/wiki/ASCII

extracted_from_files

URL
detected URL: https://www.gnu.org/licenses/gpl-3.0.en.html

XIOC detected URL: https://www.gnu.org/licenses/gpl-3.0.en.html

extracted_from_files

URL
detected URL: https://github.com/ttyridal/masterpassword-firefox

XIOC detected URL: https://github.com/ttyridal/masterpassword-firefox

extracted_from_files

Domain
detected Domain: your.site.com

XIOC detected Domain: your.site.com

extracted_from_files

Domain
detected Domain: spectre.app

XIOC detected Domain: spectre.app

extracted_from_files

URL
detected URL: https://clients2.google.com/service/update2/crx

XIOC detected URL: https://clients2.google.com/service/update2/crx

extracted_from_files

URL
detected URL: http://www.gnu.org/licenses/

XIOC detected URL: http://www.gnu.org/licenses/

extracted_from_files

URL
detected URL: https://github.com/ttyridal/masterpassword-firefox/wiki/Key-vault-troubleshooting

XIOC detected URL: https://github.com/ttyridal/masterpassword-firefox/wiki/Key-vault-troubleshooting

extracted_from_files

URL
detected URL: https://bugzilla.mozilla.org/show_bug.cgi?id=1443758

XIOC detected URL: https://bugzilla.mozilla.org/show_bug.cgi?id=1443758

extracted_from_files

Domain
detected Domain: bugzilla.mozilla.org

XIOC detected Domain: bugzilla.mozilla.org

extracted_from_files

Domain
detected Domain: emsg.id

XIOC detected Domain: emsg.id

extracted_from_files

Domain
detected Domain: data.auto

XIOC detected Domain: data.auto

extracted_from_files

IP
detected Domain: en.wikipedia.org

XIOC detected Domain: en.wikipedia.org

extracted_from_files

IP
detected Domain: scripts.sil.org

XIOC detected Domain: scripts.sil.org

extracted_from_files

Domain
detected Domain: www.lhunath.com

XIOC detected Domain: www.lhunath.com

extracted_from_files

Domain
detected Domain: torbjorn.tyridal.no

XIOC detected Domain: torbjorn.tyridal.no

extracted_from_files

Domain
detected Domain: a.download

XIOC detected Domain: a.download

extracted_from_files

Domain
detected Domain: a.click

XIOC detected Domain: a.click

extracted_from_files

Domain
detected Domain: ev.target

XIOC detected Domain: ev.target

extracted_from_files

Domain
detected Domain: drop.style

XIOC detected Domain: drop.style

extracted_from_files

Domain
detected Domain: box.style

XIOC detected Domain: box.style

extracted_from_files

Domain
detected Domain: m.style

XIOC detected Domain: m.style

extracted_from_files

Domain
detected Domain: brow.style

XIOC detected Domain: brow.style

extracted_from_files

Domain
detected Domain: date.now

XIOC detected Domain: date.now

extracted_from_files

Domain
detected Domain: global.int

XIOC detected Domain: global.int

extracted_from_files

Domain
detected Domain: module.run

XIOC detected Domain: module.run

extracted_from_files

Domain
detected Domain: this.store

XIOC detected Domain: this.store

extracted_from_files

Domain
detected Domain: blog.stevenlevithan.com

XIOC detected Domain: blog.stevenlevithan.com

extracted_from_files

Domain
detected Domain: stevenlevithan.com

XIOC detected Domain: stevenlevithan.com

extracted_from_files

Domain
detected Domain: utils.read

XIOC detected Domain: utils.read

extracted_from_files

Domain
detected Domain: z.hk

XIOC detected Domain: z.hk

extracted_from_files

Domain
detected Domain: xhr.open

XIOC detected Domain: xhr.open

extracted_from_files

Domain
detected Domain: eval.call

XIOC detected Domain: eval.call

extracted_from_files

Domain
detected Domain: array.prototype.slice.call

XIOC detected Domain: array.prototype.slice.call

extracted_from_files

Domain
detected Domain: argtypes.map

XIOC detected Domain: argtypes.map

extracted_from_files

Domain
detected Domain: module.total

XIOC detected Domain: module.total

extracted_from_files

Domain
detected Domain: runtime.global

XIOC detected Domain: runtime.global

extracted_from_files

Domain
detected Domain: e.data.id

XIOC detected Domain: e.data.id

extracted_from_files

Domain
detected Domain: document.activeelement.name

XIOC detected Domain: document.activeelement.name

extracted_from_files

Domain
detected Domain: fontawesome.io

XIOC detected Domain: fontawesome.io

extracted_from_files

Domain
detected Domain: usermessage.info

XIOC detected Domain: usermessage.info

extracted_from_files

Domain
detected Domain: accordion.in

XIOC detected Domain: accordion.in

extracted_from_files

Domain
detected Domain: this.name

XIOC detected Domain: this.name

extracted_from_files

Domain
detected Domain: d.map

XIOC detected Domain: d.map

extracted_from_files

Domain
detected Domain: array.prototype.map.call

XIOC detected Domain: array.prototype.map.call

extracted_from_files

Domain
detected Domain: this.listbox.open

XIOC detected Domain: this.listbox.open

extracted_from_files

Domain
detected Domain: event.target

XIOC detected Domain: event.target

extracted_from_files

Domain
detected Domain: this.inputnode.select

XIOC detected Domain: this.inputnode.select

extracted_from_files

Domain
detected Domain: el.style

XIOC detected Domain: el.style

extracted_from_files

Domain
detected Domain: e.id

XIOC detected Domain: e.id

extracted_from_files

Domain
detected Domain: e.data

XIOC detected Domain: e.data

extracted_from_files

Domain
detected Domain: example.com

XIOC detected Domain: example.com

extracted_from_files

Domain
detected Domain: shop.amazon.co.uk

XIOC detected Domain: shop.amazon.co.uk

extracted_from_files

Domain
detected Domain: amazon.co.uk

XIOC detected Domain: amazon.co.uk

extracted_from_files

Domain
detected Domain: ui.show

XIOC detected Domain: ui.show

extracted_from_files

Domain
detected Domain: e.target

XIOC detected Domain: e.target

extracted_from_files

Domain
detected Domain: ev.target.id

XIOC detected Domain: ev.target.id

extracted_from_files

Domain
detected Domain: b.style

XIOC detected Domain: b.style

extracted_from_files

URL
detected Domain: site.url.map

XIOC detected Domain: site.url.map

extracted_from_files

URL
detected Domain: siteurls.map

XIOC detected Domain: siteurls.map

extracted_from_files

Domain
detected Domain: v.auto

XIOC detected Domain: v.auto

extracted_from_files

Domain
detected Domain: console.info

XIOC detected Domain: console.info

extracted_from_files

Domain
detected Domain: sites.map

XIOC detected Domain: sites.map

extracted_from_files

Domain
detected Domain: scoredsites.map

XIOC detected Domain: scoredsites.map

extracted_from_files

Domain
detected Domain: www.example.com

XIOC detected Domain: www.example.com

extracted_from_files

Domain
detected Domain: a.name

XIOC detected Domain: a.name

extracted_from_files

Domain
detected Domain: msg.id

XIOC detected Domain: msg.id

extracted_from_files

Domain
detected Domain: chrome.runtime.id

XIOC detected Domain: chrome.runtime.id

extracted_from_files

Domain
detected Domain: sender.tab

XIOC detected Domain: sender.tab

extracted_from_files

Domain
detected Domain: tab.id

XIOC detected Domain: tab.id

extracted_from_files

Domain
detected Domain: r.tab.id

XIOC detected Domain: r.tab.id

extracted_from_files

Domain
detected Domain: sender.id

XIOC detected Domain: sender.id

extracted_from_files

IP
detected IP: ::b

XIOC detected IP: ::b

extracted_from_files

IP
detected IP: ::f

XIOC detected IP: ::f

extracted_from_files

Domain
detected Domain: www.inkscape.org

XIOC detected Domain: www.inkscape.org

extracted_from_files

Domain
detected Domain: clients2.google.com

XIOC detected Domain: clients2.google.com

extracted_from_files

Domain
detected Domain: github.com

XIOC detected Domain: github.com

extracted_from_files

Domain
detected Domain: www.gnu.org

XIOC detected Domain: www.gnu.org

extracted_from_files

Domain
detected Domain: cbrowser.management

XIOC detected Domain: cbrowser.management

extracted_from_files

URL
detected URL: https://github.com/ttyridal/masterpassword-firefox/issues

XIOC detected URL: https://github.com/ttyridal/masterpassword-firefox/issues

extracted_from_files

Security Analysis Summary

Security Analysis Overview

MasterPassword for chrome is a Chrome Web Store extension published by [email protected]. Version 3.0.0 has been analyzed by the Risky Plugins security platform, receiving a risk score of 64.96/100 (MEDIUM risk) based on 147 security findings.

Risk Assessment

This extension presents high security risk. Significant concerns were identified during analysis. It is not recommended for use in sensitive or production environments without thorough review.

Findings Breakdown

  • High: 50 finding(s)
  • Medium: 97 finding(s)

What Was Analyzed

The security assessment covers multiple analysis categories:

  • Malware Detection: YARA rule matching against 2,400+ malware signatures
  • Secret Detection: Scanning for exposed API keys, tokens, and credentials
  • Static Analysis: Code-level security analysis for common vulnerability patterns
  • Network Analysis: Detection of suspicious network communications and endpoints
  • Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

MasterPassword for chrome is published by [email protected] on the Chrome Web Store marketplace. The extension has approximately 3K users.

Recommendation

This extension is not recommended for installation without thorough manual review. Consider alternatives with lower risk scores, or contact the developer to address the identified security concerns.

Frequently Asked Questions