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cross-posted from: https://infosec.pub/post/42164102

Researchers demo weaknesses affecting some of the most popular options Academics say they found a series of flaws affecting three popular password managers, all of which claim to protect user credentials in the event that their servers are compromised.…

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[-] SCmSTR 6 points 6 days ago

Uhhhh.... What even is this headline

[-] eleitl@lemmy.zip 6 points 6 days ago
[-] thedeadwalking4242@lemmy.world 7 points 6 days ago
[-] melsaskca@lemmy.ca 4 points 6 days ago

Let's expand that specifically generic headline. ""You probably can't trust anything if it's been compromised". More extra non-news at eleven.

[-] cley_faye@lemmy.world 5 points 6 days ago

If the entire supply chain up to the software you're running to perform actual decryption is compromised, then the decrypted data is vulnerable. I mean, yeah? That's why we use open-source clients and check builds/use builds from separate source, so that the compromission of one actor does not compromise the whole chain. Server (if any) is managed by one entity and only manage access control + encrypted data, client from separate trusted source manage decryption, and the general safety of your whole system remain your responsibility.

Security requires a modicum of awareness and implication from the users, always. The only news here is that people apparently never consider supply chain attacks up until now?

[-] thatradomguy@lemmy.world 2 points 6 days ago* (last edited 2 days ago)

Use keepass... don't use your phone for important stuff. I never get calls or texts. I have no friends.

EDIT:

I'm not being sarcastic y'all. I legit have no friends. The only texts I get are for deliveries or appointment reminders. Legit nothing else.

[-] chunes@lemmy.world 1 points 6 days ago

And this is why I always thought a password manager is a bad idea.

Centralizing your passwords means there is one really juicy target, that if compromised, ruins everything.

[-] floofloof@lemmy.ca 6 points 6 days ago

It's clearly a risk, but if you have dozens of accounts and passwords it's hard to come up with a feasible alternative.

[-] chunes@lemmy.world 2 points 6 days ago* (last edited 6 days ago)

my solution is to make variants of my usual password that are so different I end up having to reset my passwords constantly. Lately, I've taken to writing my passwords on a piece of paper in my house, which means I can choose more unique ones

[-] Auster@thebrainbin.org 355 points 1 week ago

You probably can't trust anything if it's compromised

[-] floofloof@lemmy.ca 69 points 1 week ago* (last edited 1 week ago)

Well the specific point here is that these companies claim that a server hack won't reveal your passwords since they're encrypted and decrypted on your local device so the server only sees the encrypted version. Apparently this isn't completely true.

[-] philpo@feddit.org 16 points 1 week ago

At the point someone pulls off a valid MIM attack - which is basically a requirement here unless the whole BW/Vaultwarden server gets compromised- that is the least of someones problems. MIMs are incredibily hard these days.

[-] tal@lemmy.today 47 points 1 week ago

Yeah, the title there really doesn't reflect the article text. It should be "you probably can't trust your password manager if the remote servers it uses are compromised".

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[-] Pratai@piefed.ca 23 points 1 week ago

Are you trying to say the front fell off?

[-] wreckedcarzz@lemmy.world 12 points 1 week ago
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[-] unhrpetby@sh.itjust.works 18 points 1 week ago
[-] underisk@lemmy.ml 28 points 1 week ago

BW06: Icon URL Item Decryption. Items can include a URL field, which is used to autofill the credentials and display an icon on the client. The client decrypts the URL and fetches the icon from the server, including in its request the domain and top-level domain of the URL. For instance, if the URL is “https://host.tld/path%E2%80%9D, the client request includes “host.tld”. This means that the adversary can learn (part of) the con- tents of URL fields. Using Attack BW05, an adversary can place the ciphertext of sensitive item fields, such as a user- name or a password, in the encrypted URL field. After fetch- ing the item, the client will then decrypt the ciphertext, confus- ing it for a URL. If the plaintext satisfies some conditions (i.e. containing a ‘.’ and no !), it will be leaked to the adversary. A URL checksum feature was deployed in July 2024, mak- ing the clients store a hash of the URL in another encrypted item field, therefore providing a rudimentary integrity check and preventing this attack. Note that old items are never up- dated to add such a checksum: this feature only protects items created after its introduction. Furthermore, URL checksums are only checked if a per-item key is present for the item. As we will see, an adversary can prevent per-item keys from being enabled with Attack BW10.

IMPACT. The adversary can recover selected target ciphertexts in the item, such as the username or the password.

REQUIREMENTS. The user opens a vault containing items that do not use per-item keys (i.e., items created before July 2024, or after Attack BW10 is run). The target plaintext must satisfy some additional conditions, detailed in Appendix

-- from the paper the article is discussing

So you could potentially expose your passwords to a compromised server or some kind of MITM. If they meet the conditions for the validation check, anyway.

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[-] ryper@lemmy.ca 92 points 1 week ago

Since the summary doesn't say which three popular password managers:

As one of the most popular alternatives to Apple and Google's own password managers, which together dominate the market, the researchers found Bitwarden was most susceptible to attacks, with 12 working against the open-source product. Seven distinct attacks worked against LastPass, and six succeeded in Dashlane.

[-] sem@piefed.blahaj.zone 18 points 1 week ago

Next do proton pass

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[-] Engywuck@lemmy.zip 62 points 1 week ago
[-] lena@gregtech.eu 11 points 1 week ago* (last edited 1 week ago)

These password managers claim your passwords are secure, even if their servers get compromised, which is what is expected from a security standpoint. But that is apparently not the case.

[-] chocrates@piefed.world 49 points 1 week ago
[-] COASTER1921@lemmy.ml 68 points 1 week ago

These attacks are more around the encryption and all require a fully malicious server. It sounds like Bitwarden is taking these seriously and personally I'd still strongly prefer it to any closed source solution where there could be many more unknown but undiscovered security concerns.

Using a local solution is always most secure, but imo you should first ask yourself if you trust your own security practices and whether you have sufficient hardware redundancy to be actually better. I managed to lose the private key to some Bitcoin about a decade ago due to trying to be clever with encryption and local redundant copies.

Further, with the prevalence of 2FA even if their server was somehow fully compromised as long as you use a different authenticator app than Bitwarden you're not at major risk anyways. With how poorly the average person manages their password security this hurdle alone is likely enough to stop all but attacks targeted specifically at you as an individual.

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[-] eodur@piefed.social 49 points 1 week ago
[-] floofloof@lemmy.ca 26 points 1 week ago* (last edited 1 week ago)

Yes, although it sounds like they haven't finished fixing some of them:

All issues have been addressed by Bitwarden. Seven of which have been resolved or are in active remediation by the Bitwarden team. The remaining three issues have been accepted as intentional design decisions necessary for product functionality.

Edit: There's more information about the specific threats and remediation steps in the PDF report linked at the end of the Bitwarden blog post:

https://bitwarden.com/assets/Kki4W785JIPOdFj6EeWB5/1e74e924febb4c6a5ad03eed23b92d23/pwmgr_paper__1_-combined%C3%82__1_.pdf

[-] AliasAKA@lemmy.world 22 points 1 week ago

Looking through, it seems like for the most part these are very niche and/or require the user to be using SSO or enterprise recovery options and/or try to change and rotate keys or resync often. I think few people using this for personal would be interacting with that attack surface or accepting organizational invites, but it is serious for organizations (probably why they’re trying quickly to address this).

Honestly I think a server being incognito controlled and undetected in bitwardens fleet while also performing these attacks is, unlikely? Certainly less likely than passwords being stolen from individual site hacks or probably even banks. Like at that point, it would just be easier to do these types of manipulations directly on bank accounts or crypto wallets or email accounts than here, but then again, if you crack a wallet like this you get theoretically all the goodies to those too I suppose, for a possibly short time (assuming the user wasn’t using 2FA that wasn’t email based as well).

Not to mitigate these issues. They need to fix them, just trying to ascertain how severe and if individual users should have much cause for concern.

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[-] skrlet13@feddit.cl 34 points 1 week ago

I suggest KeepassXC, I like it. Can use it with TOTP too

[-] tatterdemalion@programming.dev 2 points 6 days ago

Or if you have like $5/mo to spend on a VPS, self-host vaultwarden. It's compatible with the bitwarden apps and browser plugins.

[-] Petter1@discuss.tchncs.de 12 points 1 week ago

Yess!
I store the keepass vault on my nextcloud
On iOS and macOS, I use Strongbox pro (one time purchase), as it integrates beautifully into the apple ecosystem using its APIs.
On linux and windows free KeepassXC with browser plug-ins
On Android I use the free keePassDX which, like strongbox, uses the android APIs for passwords

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[-] imetators@lemmy.dbzer0.com 28 points 1 week ago

JFC this headline. BREAKING NEWS: Healthy people die off an old age.

[-] oopsgodisdeadmybad@lemmy.zip 1 points 6 days ago

Jfc this headline is almost as bad.

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[-] mastod0n@lemmy.world 26 points 1 week ago

What a headline

[-] ArrowMax@feddit.org 23 points 1 week ago

Additional vendor responses by Bitwarden to put the remediations and threat models into perspective:

Bitwarden blog post

Bitwarden cryptography report

[-] BeardededSquidward 13 points 1 week ago

I'll be honest, password managers are like the holy grail of desirable to breech. If you're using one it will be constantly under attack. It being breeched or vulnerable shouldn't be a surprise. There isn't really a secure way to store large amounts of passwords that doesn't have some vulnerability issues.

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[-] Lushed_Lungfish@lemmy.ca 11 points 1 week ago

I just write down password hints on a scrap of paper.

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this post was submitted on 16 Feb 2026
287 points (100.0% liked)

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