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Vulnerability in KeePass allows retrieval of master password, issue is not yet fixed
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this post was submitted on 19 May 2023
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Even KeepassXC, which used Qt instead of .NET, aknowledge they can't garantee that things put the UI, such as the passphrase, won't appear in memory dump, even though they attempt to clear memory.
Any password manager with a UI is at risk, but KeePass should definitely do a better job at mitigating this risk.
I don't know which software, that can ever handle passwords, is immune to a hostile user capable of doing memory dumps on the target's memory space. Are you aware of one?
This threat model would require inter-process memory security at the OS level; you'd need to be running BSD, or some microkernel. You're not getting those protections on mainstream OSes, even with SE Linux, and every application that ever handles credentials in plain is at risk.
The point about Qt (and, TBH, probably about .Net) is how long the password remains in memory, and ao how big the attack vector window is, not whether or not it's completely immune to memory dump-level threats. 'Cause Windows and Linux are both susceptable to that.
Right?