Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-11 Thread Pavlos Parissis
On Τετάρτη, 11 Μαρτίου 2020 9:10:56 Π.Μ. CET Lukas Tribus wrote: > Hello, > > On Wed, 11 Mar 2020 at 08:32, Илья Шипицин wrote: > >> On 09.03.20 20:37, Lukas Tribus wrote: > >> >> I think the wording from the patch is still quite relaxed :). One of > >> >> the best > >> >> summaries describing t

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-11 Thread Willy Tarreau
On Wed, Mar 11, 2020 at 09:10:56AM +0100, Lukas Tribus wrote: > As for automatic key rotation features, I'm not aware of anyone doing > this by default, expect some niche projects (Caddy I believe does > this). Not nginx, not Apache. These are features that someone has to > actually develop. And i

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-11 Thread Lukas Tribus
Hello, On Wed, 11 Mar 2020 at 08:32, Илья Шипицин wrote: >> On 09.03.20 20:37, Lukas Tribus wrote: >> >> I think the wording from the patch is still quite relaxed :). One of the >> >> best >> >> summaries describing the session ticket flaws, which I recommend is this: >> >> https://blog.filippo.

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-11 Thread Илья Шипицин
ср, 11 мар. 2020 г. в 04:09, Björn Jacke : > On 09.03.20 20:37, Lukas Tribus wrote: > >> I think the wording from the patch is still quite relaxed :). One of > the best > >> summaries describing the session ticket flaws, which I recommend is > this: > >> https://blog.filippo.io/we-need-to-talk-abo

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-10 Thread Willy Tarreau
On Wed, Mar 11, 2020 at 12:06:45AM +0100, Björn Jacke wrote: > On 09.03.20 20:37, Lukas Tribus wrote: > >> I think the wording from the patch is still quite relaxed :). One of the > >> best > >> summaries describing the session ticket flaws, which I recommend is this: > >> https://blog.filippo.io/

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-10 Thread Björn Jacke
On 09.03.20 20:37, Lukas Tribus wrote: >> I think the wording from the patch is still quite relaxed :). One of the best >> summaries describing the session ticket flaws, which I recommend is this: >> https://blog.filippo.io/we-need-to-talk-about-session-tickets/ > Nothing about this is a MITM attac

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-10 Thread Lukas Tribus
Hello, On Tue, 10 Mar 2020 at 07:36, Илья Шипицин wrote: >> > if you specify, your security team will tell you that "it is not secure". >> > if you do not specify, keys are generated on startup and it lead to huge >> > CPU spike on app reload (if you apply new config, app is reloaded and keys

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Илья Шипицин
вт, 10 мар. 2020 г. в 05:37, Lukas Tribus : > Hello, > > > On Mon, 9 Mar 2020 at 20:39, Илья Шипицин wrote: > >> I would disable session tickets by default in haproxy. Given that most > >> clients support TLS 1.3 already this change would not even slow down > many > >> clients. > > > > > > TLS ti

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Lukas Tribus
Hello, On Mon, 9 Mar 2020 at 20:39, Илья Шипицин wrote: >> I would disable session tickets by default in haproxy. Given that most >> clients support TLS 1.3 already this change would not even slow down many >> clients. > > > TLS tickets really require more love :) > > actually, there are two bad

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Илья Шипицин
пн, 9 мар. 2020 г. в 23:21, Björn Jacke : > On 2020-03-09 at 17:44 +0100 Lukas Tribus sent off: > > Perhaps we can relax the wording a bit here and describe the actual > > technical issue along with some recommendations. Apache for example > > documents [1]: > > I think the wording from the patch

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Lukas Tribus
On Mon, 9 Mar 2020 at 19:18, Björn Jacke wrote: > > On 2020-03-09 at 17:44 +0100 Lukas Tribus sent off: > > Perhaps we can relax the wording a bit here and describe the actual > > technical issue along with some recommendations. Apache for example > > documents [1]: > > I think the wording from th

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Илья Шипицин
пн, 9 мар. 2020 г. в 23:59, Willy Tarreau : > On Mon, Mar 09, 2020 at 07:18:23PM +0100, Björn Jacke wrote: > > On 2020-03-09 at 17:44 +0100 Lukas Tribus sent off: > > > Perhaps we can relax the wording a bit here and describe the actual > > > technical issue along with some recommendations. Apache

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Willy Tarreau
On Mon, Mar 09, 2020 at 07:18:23PM +0100, Björn Jacke wrote: > On 2020-03-09 at 17:44 +0100 Lukas Tribus sent off: > > Perhaps we can relax the wording a bit here and describe the actual > > technical issue along with some recommendations. Apache for example > > documents [1]: > > I think the word

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Björn Jacke
On 2020-03-09 at 17:44 +0100 Lukas Tribus sent off: > Perhaps we can relax the wording a bit here and describe the actual > technical issue along with some recommendations. Apache for example > documents [1]: I think the wording from the patch is still quite relaxed :). One of the best summaries d

Re: TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Willy Tarreau
Hi Lukas, On Mon, Mar 09, 2020 at 05:44:59PM +0100, Lukas Tribus wrote: > > + The TLS ticket mechanism is only used up to TLS 1.2 and it is prone to > > + man-in-the-middle attacks. You should consider to disable them for > > + security reasons. TLS 1.3 implements more secure methods for session >

TLS tickets prone to MITM attacks (was: [PR] Docs tls tickets)

2020-03-09 Thread Lukas Tribus
Hello, On Mon, 9 Mar 2020 at 11:23, PR Bot wrote: > > Dear list! > > Author: Björn Jacke > Number of patches: 2 > > This is an automated relay of the Github pull request: >Docs tls tickets > > Patch title(s): >BUG/MINOR: fix typo of tls-tickets >DOC: improve description of no-tls-ti