full-disclosure - Re: Apache 2.2.17 exploit?

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Date: Tue, 04 Oct 2011 21:57:41 +0000
From: halfdog <me@...fdog.net>
To: Kai <kai@...nn.net>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Apache 2.2.17 exploit?

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Hello Kai,
Kai wrote:
> Hi halfdog,
> 
>> Just for those, who want to build their own apache shell code
>> for testing purposes, this snip might be of some use. It uses the
>> still open tcp connections to the server to spawn the shells, so
>> that no backconnect is needed. Of course, it does not give remote
>> root but only httpd user privs. And you should send "exec 1>&0"
>> as first command if you want to see remote shell stdout.
> 
> wasn't that bug fixed a long ago?
> https://bugs.php.net/bug.php?id=38915 --->
> https://issues.apache.org/bugzilla/show_bug.cgi?id=46425 sorry if
> i'm talking about different thing.

Thanks for the link. I have to look into it closer, perhaps my code is
just working because I dup2 the fd to stdin before exec, which might
get rid of the FD_CLOEXEC. At least in tests, where I injected code
into mpm-worker on x86 (32bit) using gdb and other methods, it
succeeded in giving me remote shell.

hd

- -- 
http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88  2BD8 C459 9386 feed a bee
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