[exim] Re: Exim Zero Day?

2023-10-01 Thread Oliver Egginger via Exim-users
Would it (temporary) help to restrict authentication via auth_advertise_hosts? - oliver -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## exim-users-unsubscr...@l

[exim] Re: Exim Zero Day?

2023-10-01 Thread Christof Meerwald via Exim-users
On Fri, 29 Sep 2023 15:17:05 +, Some Guy via Exim-users wrote: > Hi, I'm running an appliance which includes an Exim MTA and now I'm > wondering, if I should be worried because of the RCE with CVSS 9.8 described > at the Zero Day Initiative homepage here: > > https://www.zerodayinitiative.com

[exim] Re: Exim Zero Day?

2023-10-01 Thread Oliver Egginger via Exim-users
On Sat, 30 Sep 2023, Andrew C Aitchison via Exim-users: I've seen some second hand reports (eg on the mailop list, which 1) has a closed archive, and 2) seems unreachable this evening) that the vulnerabilities are in SPA (Microsoft, NTLM) authentication and libspf2. So for authentication, only

[exim] Re: Exim Zero Day?

2023-10-01 Thread Rainer Dorsch via Exim-users
Am Samstag, 30. September 2023, 10:34:14 CEST schrieb Andrew C Aitchison via Exim-users: > Yesterday Heiko posted > https://seclists.org/oss-sec/2023/q3/254 > in one of the security lists. For me, it would be helpful if at least the timelines would be properly communicated to the users,

[exim] Re: Exim Zero Day?

2023-10-01 Thread Andreas Barth via Exim-users
* Rainer Dorsch via Exim-users (exim-users@lists.exim.org) [231001 15:02]: > Am Samstag, 30. September 2023, 10:34:14 CEST schrieb Andrew C Aitchison via > Exim-users: > > Yesterday Heiko posted > > https://seclists.org/oss-sec/2023/q3/254 > > in one of the security lists. > > For me, it

[exim] The current CVEs

2023-10-01 Thread Heiko Schlittermann via Exim-users
Summary --- Six 0day exploits were filed against Exim. None of these issues is related to transport security (TLS) being on or off. * 3 of them are related to SPA/NTLM, and EXTERNAL auth. If you do not use SPA/NTLM, or EXTERNAL authentication, you're not affected. These issues are fixed.

[exim] Re: Exim Zero Day?

2023-10-01 Thread Rainer Dorsch via Exim-users
I did not want to say that I want to migrate to postfix because it is handling security issues better than exim4. I stopped the exim4 service on servers with port 25 accessible from the internet, but since I cannot do that for a long time, migrating to postfix would be an emergency fix, since

[exim] Re: Exim Zero Day?

2023-10-01 Thread Viktor Dukhovni via Exim-users
On Sun, Oct 01, 2023 at 05:50:00PM +0200, Andreas Barth via Exim-users wrote: > I have seen the security side as debian release manager for quite many > software products. And I doubt much that postfix would do it much > different. Coordinated release of security updates is standard industry prac

[exim] Re: Exim Zero Day?

2023-10-01 Thread Slavko via Exim-users
Dňa 1. októbra 2023 17:49:26 UTC používateľ Rainer Dorsch via Exim-users napísal: >I stopped the exim4 service on servers with port 25 accessible from the >internet Please why? + do you use AUTH (NTLM/EXTERNAL) on port 25? + do you have untrusted proxy in front? + you have not reliable resolv

[exim] Re: Exim Zero Day?

2023-10-01 Thread Christof Meerwald via Exim-users
On Sun, 01 Oct 2023 19:50:43 +, Slavko via Exim-users wrote: > Dňa 1. októbra 2023 17:49:26 UTC používateľ Rainer Dorsch via Exim-users > napísal: >>I stopped the exim4 service on servers with port 25 accessible from the >>internet > > Please why? > > + do you use AUTH (NTLM/EXTERNAL) on por

[exim] Re: Exim Zero Day?

2023-10-01 Thread Slavko via Exim-users
Dňa 1. októbra 2023 20:07:45 UTC používateľ Christof Meerwald via Exim-users napísal: >This was only officially confirmed today (which is very unfortunate), That is true only in this ML, othervise it was confirmed in Friday: https://www.openwall.com/lists/oss-security/2023/09/29/5 But yes

[exim] Re: Exim Zero Day?

2023-10-01 Thread Christof Meerwald via Exim-users
On Sun, 01 Oct 2023 20:35:48 +, Slavko via Exim-users wrote: > Dňa 1. októbra 2023 20:07:45 UTC používateľ Christof Meerwald via Exim-users > napísal: >>This was only officially confirmed today (which is very unfortunate), > > That is true only in this ML, othervise it was confirmed in Friday