[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread John Levine
It appears that Murray S. Kucherawy said: >(a) Inertia will mean "l=" is generated and/or accepted for a long time to >come no matter what we say or do; and Yup. >(b) Even if (a) weren't true, "l=" then becomes an unrecognized tag at >verifiers, which will mean those signatures break and we hav

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Wei Chuang
On Mon, May 20, 2024 at 5:29 PM John Levine wrote: > It appears that Wei Chuang said: > >-=-=-=-=-=- > > > >Hi DKIM folks, > >As many of you know there was a DKIM security vulnerability disclosure > >Friday around the signature header body length tag "l=". The blog post is > >here: https://www.

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Murray S. Kucherawy
On Sun, May 19, 2024 at 9:27 AM Wei Chuang wrote: > As many of you know there was a DKIM security vulnerability disclosure > Friday around the signature header body length tag "l=". The blog post is > here: https://www.zone.eu/blog/2024/05/17/bimi-and-dmarc-cant-save-you/ > The authors state that

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread John Levine
It appears that Wei Chuang said: >-=-=-=-=-=- > >Hi DKIM folks, >As many of you know there was a DKIM security vulnerability disclosure >Friday around the signature header body length tag "l=". The blog post is >here: https://www.zone.eu/blog/2024/05/17/bimi-and-dmarc-cant-save-you/ >The authors

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Al Iverson
On Sun, May 19, 2024 at 2:41 PM John Levine wrote: > Honestly, I don't know. Of the trickle of mail I see with l=, most is > from the libertarian Reason blog with l=1 and the rest is from > Verisign who for some reason sign with l= actual length. > > I suspect I could get Verisign's attention. Rea

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Steffen Nurpmeso
Jeremy Harris wrote in : |On 19/05/2024 17:26, Wei Chuang wrote: |> then rewrite the Content-type header mime |> delimitter | |Seems like including this header in the signed set would be |Best Practice? Indeed. I want to remark that this thread seems to reiterate an attack from 2018: ht

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread John Levine
It appears that Jeremy Harris said: >On 20/05/2024 09:06, Alessandro Vesely wrote: >> Content-Type: is a technical field > >Not a term I've met before. Is there a formal definition? As Dave said, no. There isn't even an informal definition. >And as far as "which forwarders need to change" goe

[Ietf-dkim] Re: WG Action: Formed Mail Maintenance (mailmaint) / Commitment

2024-05-20 Thread Pete Resnick
On 20 May 2024, at 12:55, Pete Resnick wrote: > nobody is interested in implementing it aside from the implementer. s/implementer/proposer (brain ahead of fingers) -- Pete Resnick https://www.episteme.net/ All connections to the world are tenuous at best ___

[Ietf-dkim] Re: WG Action: Formed Mail Maintenance (mailmaint) / Commitment

2024-05-20 Thread Pete Resnick
On 20 May 2024, at 10:13, Bob Hinden wrote: On May 19, 2024, at 7:22 PM, Dave Crocker wrote: On 5/10/2024 2:33 PM, Dave Crocker wrote: On 5/10/2024 10:54 AM, Murray S. Kucherawy wrote: * Prior to accepting any Standards Track document for development, there must be a commitment to implement t

[Ietf-dkim] Re: WG Action: Formed Mail Maintenance (mailmaint) / Commitment

2024-05-20 Thread Bob Hinden
Hi, > On May 19, 2024, at 7:22 PM, Dave Crocker wrote: > > On 5/10/2024 2:33 PM, Dave Crocker wrote: >> On 5/10/2024 10:54 AM, Murray S. Kucherawy wrote: >>> * Prior to accepting any Standards Track document for development, there >>> must >>> be a commitment to implement the resulting propose

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Dave Crocker
On 5/20/2024 2:23 AM, Jeremy Harris wrote: And as far as "which forwarders need to change" goes - isn't the entire point of DKIM to detect chages? no. "Abstract DomainKeys Identified Mail (DKIM) permits a person, role, or organization that owns the signing domain to claim some respon

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Jeremy Harris
On 20/05/2024 09:06, Alessandro Vesely wrote: Content-Type: is a technical field Not a term I've met before. Is there a formal definition? And as far as "which forwarders need to change" goes - isn't the entire point of DKIM to detect chages? -- Cheers, Jeremy _

[Ietf-dkim] Re: DKIM with body length

2024-05-20 Thread Alessandro Vesely
On Sun 19/May/2024 21:28:21 +0200 Jeremy Harris wrote: On 19/05/2024 17:26, Wei Chuang wrote: then rewrite the Content-type header mime delimiter Seems like including this header in the signed set would be Best Practice? I hope not. Content-Type: is a technical field, which forwarders nee