Security hole: CORE gives root access to ordinary users

[eribertomota]

Hi,

I am the Debian maintainer of CORE. Recently, a bug opened[1] in Debian told us about a privilege escalation via core-gui.

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=799756

This issue will cause the CORE removal from Debian in some days[2].

[2] https://udd.debian.org/cgi-bin/autoremovals.cgi

To break the removal, I need upload a fix. It can be a patch or a new version. So, I would like to ask: is there a solution for this issue?

Thanks a lot in advance.

Regards,

Eriberto

[stuartmarsden]

This has been raised in the mailing list here and is being discussed.

I am not sure there is any easy way around this but I am not one of the developers just a small contributor. Hopefully a way can be found to keep it in.

[eribertomota]

Thanks for your reply Stuart.

I will wait for a decision. No matter what the circunstances, if no
solution for Debian and if you want, I can join to the team to provide .deb
packages. However, I hope that the developers find a solution for this
relevant project still integrating Debian.

Regards,

Eriberto

2015-10-11 18:55 GMT-03:00 stuartmarsden notifications@github.com:

This has been raised in the mailing list here
http://pf.itd.nrl.navy.mil/pipermail/core-users/2015-October/001871.html
and is being discussed.

I am not sure there is any easy way around this but I am not one of the
developers just a small contributor. Hopefully a way can be found to keep
it in.

—
Reply to this email directly or view it on GitHub
#75 (comment).

[bharnden]

The GUI loophole is a byproduct of using vcmd, which provides root access within nodes. If vcmd was locked down to only be ran by sudo, would that solve this problem?

[eribertomota]

Em qua, 5 de jun de 2019 às 17:59, bharnden <notifications@github.com> escreveu:

The GUI loophole is a byproduct of using vcmd, which provides root access within nodes. If vcmd was locked down to only be ran by sudo, would that solve this problem?

Hi @bharnden, Thanks for your help. No, it don't solve the issue because a student will can access the main system in a university. Regards, Eriberto

[TinCanTech]

You realise that OpenVPN has exactly the same issue ..

[asteindev]

Has any work or investigation for this been done since the issue was created? I tried a couple links to email threads while trying to understand the history or if there were short-term patches that could be applied, but a good chunk of the links don't appear to be working after 7 years.

On a side note, this is a serious enough security problem that CORE maintainers may want to recharacterize this as a bug rather than an enhancement.