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ylk

491 karma · joined August 11, 2016

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ylk··on BadHost – CVE-2026-48710: Starlette Host-Header Auth Bypass
The URL was meant to be https://badhost.org, the site accidentally still has the old canonical meta tag.
ylk··on Microsoft Edge stores all passwords in memory in clear text, even when unused
You're correct, thank you. Sadly I can't edit my comment anymore. Sorry for the confusion.
ylk··on Microsoft Edge stores all passwords in memory in clear text, even when unused
There are (illegal) marketplaces initial access brokers sell session cookies on. Some companies try to defend against that by e.g. checking whether it's even possible that you travelled from place A to place B within a certain timeframe and, based on that, might invalidate your cookie. But then again attackers, depending on their sophistication, find their ways around it by ensuring they proxy their traffic via geographically close residential proxies, use the same OS and browser versions, etc.

Google now wants to bind credentials to a device by storing the secret in the TPM: https://blog.google/security/protecting-cookies-with-device-...

ylk··on Microsoft Edge stores all passwords in memory in clear text, even when unused
For reference, this is how Google says Chrome stores passwords encrypted in memory and uses an elevated service to prevent other processes from impersonating Chrome and gaining access to the plain text passwords: https://security.googleblog.com/2024/07/improving-security-o...
ylk··on I found a vulnerability. they found a lawyer
This is not how CVEs work at all. You can be pretty vague when registering it. In fact they’re usually annoyingly so and some companies are known for copy and pasting random text into the fields that completely lead you astray when trying to patch diff.

Additionally, MITRE doesn’t coordinate a release date with you. They can be slow to respond sometimes but in the end you just tell them to set the CVE to public at some date and they’ll do it. You’re also free to publish information on the vulnerability before MITRE assigned a CVE.

ylk··on GrapheneOS – Break Free from Google and Apple
> The baseband can do a lot, it has dma

There's an IOMMU:

> Is the baseband isolated? > Yes, the baseband is isolated on all of the officially supported devices. Memory access is partitioned by the IOMMU and limited to internal memory and memory shared by the driver implementations. [...]

https://grapheneos.org/faq#baseband-isolation

> GrapheneOS cannot really influence this, but hardened_malloc could conceivably help.

They can and do, see above. But I don't see how hardened_malloc is related to the baseband doing DMA.

ylk··on RediShell: Critical remote code execution vulnerability in Redis
fwiw, they're using CVSSv3. In CVSSv4, it's probably an 8.7: https://www.first.org/cvss/calculator/4-0#CVSS:4.0/AV:N/AC:L...
ylk··on Google: 'Your $1000 phone needs our permission to install apps now' [video]
> Android 16 no longer provides device trees for Pixels as part of the Android Open Source Project. It's important to note it doesn't provide those for any other devices. There are no other OEMs providing similar AOSP support. [...]

by strcat, Graphene OS founder https://news.ycombinator.com/item?id=44679100

ylk··on Blurry rendering of games on Mac
The screen is a 16:10 screen with some extra pixels added next to the notch. By default, the system uses a resolution of 1512x982 (14"), which you can change to 1512x945 (16:10) to move the menu bar below the notch and end up with black pixels next to the notch.
ylk··on Containerization is a Swift package for running Linux containers on macOS
You don’t have to assume, the docs in the repo tell you that it does run a Linux kernel in each VM. It’s one container per VM.
ylk··on Quarkdown: A modern Markdown-based typesetting system
Not trying to argue that this happens regularly, but some recent (last 6 months or so) minted update contained breaking changes.
ylk··on Homomorphic encryption in iOS 18
> a feature that can only be appreciated by a subculture of people (privacy advocates)

Just because it can’t be “appreciated” by all users doesn’t mean it’s only “for” a small sub-group.

It seems to me they’re just trying to minimise the data they have access to — similar to private cloud compute — while keeping up with the features competitors provide in a less privacy-respecting way. Them not asking for permission makes it even more obvious to me that it’s not built for any small super privacy-conscious group of people but the vast majority of their customers instead.

ylk··on A mole infiltrated the highest ranks of American militias
What you write sounds plausible at first, but then there’s this example from the German KSK:

„In 2018, the German Federal Criminal Police Office uncovered a plot involving unknown KSK soldiers to murder prominent German politicians such as Claudia Roth, Heiko Maas and Joachim Gauck among others, and carry out attacks against immigrants living in Germany.[7] Also, earlier that same year in a separate investigation, the State prosecutors in the city of Tübingen investigated whether neo-Nazi symbols were used at a "farewell" event involving members of KSK.[8][9]

In June 2020, German defence minister Annegret Kramp-Karrenbauer announced that the unit would be partially disbanded due to growing far-right extremism within the ranks.[10] The KSK had become partially independent from the chain of command, with a toxic leadership culture. One of the force's four companies where extremism is said to be the most rife was to be dissolved and not replaced.[11]“

https://en.m.wikipedia.org/wiki/Kommando_Spezialkr%C3%A4fte

ylk··on Passkey technology is elegant, but it's most definitely not usable security
It’s recommended to have at least two anyway, to still have access to your accounts in case one is lost. That means you can keep one key at your desktop and you’d only need to go up to get your keys when adding them to an account.
ylk··on A Tour of WebAuthn
I agree that it's annoying that there's now a limit on the amount of credentials you can store on hardware keys. But while older Yubikeys only support 25 resident keys, models with firmware 5.7 onwards support 100. That probably makes it feasible to exclusively store passkeys in hardware. https://www.yubico.com/blog/empowering-enterprise-security-a...

However, I don't know whether it's possible to delete only a single resident key you no longer need.

ylk··on A Tour of WebAuthn
Just use a password manager that doesn't sync by itself then

https://keepassxc.org/docs/KeePassXC_UserGuide#_passkeys

ylk··on Microsoft Confirms Password Deletion for 1B Users
I’m saying most people who do phishing likely don’t care to implement passkey detection to display a relevant error message to the user, as it’s not worth the effort, as of now
ylk··on Microsoft Confirms Password Deletion for 1B Users
There are syncable and hardware-bound passkeys and you are free to use a password manager that syncs your passkeys. iPhones don’t even let you create a passkey with the built in password manager if you have synchronisation disabled. I don’t know for sure if Google does the same but I expect them to.

If you’re remembering all your passwords there’s a good chance they’re terrible, you frequently re-use them or both. That really helps attackers e.g. when they use leaked passwords to run credential stuffing attacks on your employer.

You just wrote two comments bashing a technology you admit you didn’t properly educate yourself about.

ylk··on Microsoft Confirms Password Deletion for 1B Users
Register a passkey on a different device or get a hardware key or whatever. Or call Microsoft support and complain to them. This doesn’t feeling like an honest discussion anymore.
ylk··on Microsoft Confirms Password Deletion for 1B Users
Honestly don’t care to spend time on looking up the various states of 2fa proxies. But I’ve learnt so far that attackers don’t build/use the most advanced tooling you can think of at all times. They often use the simplest thing that gets the job done. If it’s not targeted, it’s fine to not get the credentials of people with a passkey. Up until a significant portion of targets use passkeys, which I highly doubt to be the case as of now.

Additionally, “the kind of person who's prone to non-targeted phishing attacks” is actually everyone — including infosec professionals spending lots of time on phishing campaigns for red team engagements. You just need to be lucky enough to reach them at the right (emotional, stressful, …) moment. Getting grammar and spelling correct and even potentially even slightly customising each email is made much easier by AI. Knowledgeable users might, however, stop once their passkey doesn’t work and try to understand why.

ylk··on Microsoft Confirms Password Deletion for 1B Users
Find your phone: https://www.icloud.com/find/

Scanning a QR code: https://support.apple.com/en-us/102680

The time investment could even be worth it, since "Signing in with a passkey is three times faster than using a traditional password and eight times faster than a password and traditional MFA", according to the article.

ylk··on Microsoft Confirms Password Deletion for 1B Users
> In the case of those services you mention, passkeys are nothing but convenience; they provide no extra security.

They do provide extra security, in that they ensure that you're on the correct domain instead of a phishing site.

ylk··on Review of Mullvad VPN
That’s for accessing the website, not for sending your traffic via TOR to Mullvad. I don’t think they have a built-in way to send traffic to them via TOR without going through an exit node.
ylk··on Review of Mullvad VPN
You can also mail them cash
ylk··on Review of Mullvad VPN
Link to Mullvad's blog post: https://mullvad.net/en/blog/the-report-for-the-2024-security...
ylk··on Multiple new macOS sandbox escape vulnerabilities
> You certainly can run distros without systemd

Does it then become not a full OS anymore? Mirage is what I linked to above.

ylk··on Multiple new macOS sandbox escape vulnerabilities
In what way are [1] not “full OSes”? They’re minimal templates, but afaik they still run systemd, the kernel, etc. needed to boot the standard Linux systems they are.

When I clicked the link I was expecting something like a unikernel, eg https://roscidus.com/blog/blog/2016/01/01/a-unikernel-firewa...

ylk··on Cloudflare audits key transparency for WhatsApp
Original title: Cloudflare helps verify the security of end-to-end encrypted messages by auditing key transparency for WhatsApp
ylk··on Show HN: A journaling service that runs over WhatsApp
The topic has been e2ee, which is first and foremost about security. You can have e2ee without privacy, as is likely the case with WhatsApp.

You certainly can “prove” and “disprove” “security” by reverse engineering, to the same extent a source code review can (or even more, since you’re looking at what’s actually running on the device). It can often require a bigger time investment, but even that’s not always the case in my experience, especially if you’re working with a really bad code base.

ylk··on Show HN: A journaling service that runs over WhatsApp
The app uses the (i)phone OS’s cloud storage APIs to write to the backup folder, meta’s servers don’t have access to any credentials. For Android I currently can’t check, but it’s obvious from their FAQs that they have the app upload to Google‘s servers even if they don’t use the OS APIs there: https://faq.whatsapp.com/481135090640375/?cms_platform=andro...

They have indirect control over the user’s backup folder via the app, but meta would need to distribute a malicious update to everyone that causes the user’s apps to download the backup and send it to meta, at which point they could just skip trying to access the backup and directly upload the chats from the app.

It’s impressive how much misinfo you’re spreading.

Edit: Meta’s actions over the years clearly show that they don’t want to know the contents of your messages. Not knowing their contents means, for example, that they don’t have to run scanners to detect illegal content (but users can report messages). They benefit from making WhatsApp a secure platform, as it allows them to collect everyone’s metadata, which apparently has lots of value to them.

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