Maldua's Zimbra FOSS Builds - Share your feedback

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darkfader
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by darkfader »

JDunphy wrote: Sat Jun 27, 2026 2:11 pm Could or should Maldua use its platform to provide patches for emergency security issues? Would it be a series of scripts, ansible playbooks in a repository with a pimbra tag that one could fetch and run given the processing delay for FOSS admins to receive security updates? They could come from contributions from the community given we all benefit when Zimbra isn't associated with the next big exploit in the news.

Jim
I'd pay to support that - and note it needs someone paid to review the contributions since otherwise that'd be the best channel to exploit.
I would also set the bar a bit higher: not just that Zimbra isn't cause for another big exploit wave, but that there's no longer need for a CISA warning against using Zimbra.
IDK if some people "accept that risk", but generally we'll all be better of by something that improves the average zimbra install's safety.
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jered
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by jered »

halfgaar wrote: Mon Jul 20, 2026 6:34 pm
jered wrote: Mon Jul 20, 2026 12:19 pm but I wish there was some way to successfully sandbox this vulnerability nightmare.
https://pm.zimbra.com/p/zrfe-44-support ... ity-policy

(which I brought up again the other day: viewtopic.php?t=74634)
This would be amazing, but I don't see any indication that Zimbra will invest any further in the Classic Web Client, and certainly not accept community contributions. IIUC, adding a CSP simply to the message iframe (id="zv__TV-main__MSG__body__iframe") is not sufficient? (If it is, this seems like something that should be possible to simply inject client-side?)
RaNd
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by RaNd »

Hi, i'm looking for a mobile friendly theme, has anyone tried to build something ?
Got the zextras from the github repo, but it requires a lot of effort to make it usable...
Thanks!
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JDunphy
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by JDunphy »

jered wrote: Tue Jul 21, 2026 12:44 pm This would be amazing, but I don't see any indication that Zimbra will invest any further in the Classic Web Client, and certainly not accept community contributions. IIUC, adding a CSP simply to the message iframe (id="zv__TV-main__MSG__body__iframe") is not sufficient? (If it is, this seems like something that should be possible to simply inject client-side?)
iframe-level hardening could be attempted as a client-side patch, but merely injecting a CSP into the existing iframe is probably still not enough given the dangers that LLM's bring to offensive tooling. The real work is separating the origins, serving the iframe with authoritative headers, removing ambient authority from the renderer, and then rebuilding the shell-to-renderer interactions that same-origin Classic code previously took for granted.

Jim
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adrian.gibanel.btactic
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Re: On Zextras theme for mobile

Post by adrian.gibanel.btactic »

RaNd wrote: Wed Jul 22, 2026 9:49 am Got the zextras from the github repo
I'm curious to know what repo you checked exactly.

Thank you.
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by jered »

Any chance of a 10.1.17.p3 with the extracted CSS/js fixes for the web client soon?
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Re: On Zextras theme for mobile

Post by Klug »

adrian.gibanel.btactic wrote: Fri Jul 24, 2026 10:16 am
RaNd wrote: Wed Jul 22, 2026 9:49 am Got the zextras from the github repo
I'm curious to know what repo you checked exactly.
This one I guess: https://github.com/ZeXtras/zextras-theme
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by jered »

So far, so good with 10.1.18.p1! (Not a lot of changes, so I'd hope so...)
vchong68
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Re: Maldua's Zimbra FOSS Builds - Share your feedback

Post by vchong68 »

Ubuntu 22.04
From 10.1.17p2 to 10.1.18p1 smooth upgrade.
Everything works fine.
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