Only use manually triggered autofill on sites you can reasonably trust.And until next week (see “Update: March 17, 2023” below), you should take this precaution as well: If you decide to stick with Bitwarden, which is an otherwise reliable service and our favorite free password manager, you should also leave off preemptive autofill. Use a service or app that won’t autofill forms hosted on external sites, or at the very least, will warn you that you’re about to do so.Good services and apps have this disabled by default-leave it that way for better security. (And no, the answer isn’t to never use a password manager.) During Flashpoint’s spot check of rivals, they only autofilled for the site saved in the vault entry, or at least flashed a warning if an iframe pulled in an external form.Īs a password manager user, you can take two major steps to protect yourself from this kind of vulnerability. Meanwhile, other password managers look like safer options, as they remain stricter with their autofill policies. Bitwarden also doesn’t warn users when they’re filling out a form hosted on a different page or site, and gives a free pass to subdomains of a website, too. ![]() This vulnerability exists whether you have Bitwarden preemptively fill out login forms or you manually trigger autofill Flashpoint’s testing showed that either usage of autofill carries the same risk. ICloud’s login page uses iframes to enable login through -and Bitwarden cites this as one reason for its lax policy on autofill. The company gives the example of iCloud as a major website that still uses iframes to connect to for login. This permissiveness isn’t by accident, but design: In the company’s documentation about the issue, which was published in late 2018, Bitwarden states that its goal is to encourage better adaption to a password manager. If any of those external HTML elements become compromised (like advertising, a known vector for exploits), the result could be stolen login data. On websites that use iframes-where a page loads HTML elements from a different webpage-login forms hosted on an external website are still filled in with the saved site’s user ID and password info. However, until that update goes live, our original report and advice stand.īut as security firm Flashpoint.io detailed in a blog post last week, Bitwarden’s autofill has a deeper vulnerability than other services. Update, 3/17/23: Bitwarden says it will be releasing changes next week to its autofill behavior, which we’ve outlined at the end of this article along with revised recommendations for steps you can take to keep your passwords safe online. If on the EMM console "disallow autofill" is not selected, this is a finding.Ĭonfigure the Google Android 12 device work profile to disable the autofill services.Update, 3/31/23: Bitwarden says its new warning system for autofill has gone live. ![]() ![]() ![]() Verify that "Disable autofill" is toggled to ON. This procedure is performed only on the EMM Administration console.Ģ. Review the Google Android 12 work profile configuration settings to confirm that autofill services are disabled. Google Android 12 COPE Security Technical Implementation Guideĭetails Check Text ( C-53881r802692_chk ) By disabling the autofill services, the risk of an adversary gaining further information about the device's user or compromising other systems is significantly mitigated.Įxamples of apps that offer autofill services include Samsung Pass, Google, Dashlane, LastPass, and 1Password. By allowing the use of autofill services, an adversary who learns a user's Android 12 device password, or who otherwise is able to unlock the device, may be able to further breach other systems by relying on the autofill services to provide information unknown to the adversary. The autofill services allow the user to complete text inputs that could contain sensitive information, such as personally identifiable information (PII), without previous knowledge of the information.
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