The actual problem now is my embedded Tomcat when I start my Spring Boot
app from Eclipse STS:
I get the same error, but I don't know where to configure Tomcat and where
to add this new paramerer.
Anyone?

On Fri, Jun 20, 2025 at 1:28 PM Maxim Solodovnik <solomax...@gmail.com>
wrote:

> from mobile (sorry for typos ;)
>
>
> On Fri, Jun 20, 2025, 18:16 Hrvoje Lončar <horv...@gmail.com> wrote:
>
> > Well, I should say it was a weird way to fix it.
> >
> > For example, if you don't have a DoS attack
>
>
> AFAIK defaults should be set to the values preventing DoS
> Waiting for the DoS is not a good idea :)
>
>
> and you upgrade your Tomcat,
> > that would be a big surprise as it was to me.
> > Lucky me I have nice users that contacted me and told me some features of
> > my web app stopped working.
> > Moving to next minor release shoulnd't be a surprise even if it is bug
> fix
> > such you mentioned.
> > Default value should be higher and it should be clearly noted that you
> have
> > to lower it down to go to safe side regarding DoS attacks.
> >
> > But then again, if you have an actual attack, you're forced to fix
> > something anyway, so setting the parameter to lower value (as default
> > should be set to higher values) would be the better fix than upgrading
> the
> > whole Tomcat, especially if you can expect major changes that could
> > surprise you as they did me few days ago.
> > Installing a new version is maybe not the best way to go while fixing
> > vulnerabilites under attack if easier option is available (lowering value
> > to be lower than default).
> > Default value of 10 would be appropriate for major release when you
> expect
> > major changes and you're prepared to additional work regarding upgrade.
> > But switching from one minor release to another shouldn't break existing
> > setup, it should only fix bugs.
> >
> > BR,
> > Hrvoje Lončar
> >
> > On Fri, Jun 20, 2025 at 1:02 PM Mark Thomas <ma...@apache.org> wrote:
> >
> > > On 20/06/2025 11:54, Hrvoje Lončar wrote:
> > > > Thank you very much
> > > > Mark ThomasThat was the case :(
> > > > Absolutely weird to make such a major change in a minor release from
> > > > NN.MM.39 to NN.MM.42
> > >
> > > It was a response to a DoS security vulnerability.
> > >
> > > Feel free to add your views on what the defaults should be to the BZ
> > > discussion.
> > >
> > > Mark
> > >
> > >
> > > >
> > > >
> > > >
> > > > On Fri, Jun 20, 2025 at 10:01 AM Mark Thomas <ma...@apache.org>
> wrote:
> > > >
> > > >> On 20/06/2025 02:07, Hrvoje Lončar wrote:
> > > >>> Hi!
> > > >>>
> > > >>> Hope it's the right place to ask for help or/and advice.
> > > >>> Few days ago I switched to latest Tomcat 10.1.42.
> > > >>> After deyploy POST is not working due to missing CSRF token.
> > > >>> When I inspect HTTP request, CSRF token is in a payload as "_csrf"
> > and
> > > >> the
> > > >>> value is correct.
> > > >>> But at the backend side I get
> > > >>>
> > > >>> * AccessDeniedException = Invalid CSRF Token 'null' was found on
> the
> > > >>> request parameter '_csrf' or header 'X-XSRF-TOKEN'.*
> > > >>>
> > > >>> Everything works fine with 10.1.39.
> > > >>> To be sure tried on 2 different Ubuntu servers - test and
> production
> > > >>> instance.
> > > >>>
> > > >>> Anyone else having the same problem?
> > > >>
> > > >> Maybe related to:
> > > >>
> > > >> https://bz.apache.org/bugzilla/show_bug.cgi?id=69710
> > > >>
> > > >> Try setting maxPartCount on the connector but be aware of DoS risks
> as
> > > >> the value gets higher.
> > > >>
> > > >> Mark
> > > >>
> > > >>
> > > >>>
> > > >>> Some technical info:
> > > >>> - Ubuntu 24.04.2 LTS
> > > >>> - nginx/1.27.5 to handle SSL certificate
> > > >>> - Apache Tomcat 10.1.39 and 10.1.42
> > > >>> - Java 21
> > > >>> - Spring Boot 3.5.0
> > > >>>
> > > >>> Thanks!
> > > >>>
> > > >>> BR,
> > > >>> Hrvoje
> > > >>
> > > >>
> > > >>
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> > > >>
> > > >>
> > > >
> > >
> > >
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> > >
> > >
> >
> > --
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> >
>


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