Re: [TLS] Question about Large Record Sizes draft and the TLS design

2024-03-19 Thread Jan-Frederik Rieckers
On 20.03.24 11:08, David Benjamin wrote: I can't say what was going on in the SSLv3 days, but yes record size limits are important for memory. Whatever the maximum record size is, the peer can force you to buffer that many bytes in memory. That means the maximum record size is actually a DoS pa

Re: [TLS] Question about Large Record Sizes draft and the TLS design

2024-03-19 Thread Salz, Rich
* Whatever the maximum record size is, the peer can force you to buffer that many bytes in memory. That means the maximum record size is actually a DoS parameter for the protocol. Absolutely true. If you have a limit, attackers will try to push your server up to and over the limit and try t

Re: [TLS] Question about Large Record Sizes draft and the TLS design

2024-03-19 Thread David Benjamin
I can't say what was going on in the SSLv3 days, but yes record size limits are important for memory. Whatever the maximum record size is, the peer can force you to buffer that many bytes in memory. That means the maximum record size is actually a DoS parameter for the protocol. On Wed, Mar 20, 20

[TLS] Question about Large Record Sizes draft and the TLS design

2024-03-19 Thread Jan-Frederik Rieckers
Hi to all, during the presentation of the Large Record Sizes draft at the tls session yesterday, I wondered why the length restriction is in TLS in the first place. I have gone back to the TLS1.0 RFC, as well as SSLv3, TLS1.3 and TLS1.2 and have found the restriction in all of them, but not