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Bug 7528 - hack into base Red Hat 6.0 install
hack into base Red Hat 6.0 install
Product: Red Hat Linux
Classification: Retired
Component: bind (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Bernhard Rosenkraenzer
: Security
Depends On:
  Show dependency treegraph
Reported: 1999-12-02 22:20 EST by Umair Hoodbhoy
Modified: 2008-05-01 11:37 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 1999-12-08 10:21:58 EST
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Umair Hoodbhoy 1999-12-02 22:20:45 EST
I had a fresh Red Hat 6.0 install and had commented out the telnet line of
/etc/inetd.conf. Yet, I came to know that my machine got hacked and anyone
could gain root access without a username/passwd prompt just by doing
'telnet <host> <port>' where the <port> was a string, not a number. Is this
a common bug? What exact security patches do I need to prevent this from
happening again? Thanks.
Comment 1 Umair Hoodbhoy 1999-12-02 22:22:59 EST
I forgot to mention: the bug tracker won't allow me to enter this as 'Component
Text' so I'm sending this under 'bind' component.
Comment 2 Bernhard Rosenkraenzer 1999-12-08 10:21:59 EST
Someone almost certainly started a daemon to allow this, or modified your
To give you any more details, I'd need to know which string was used, as ports
*can* be specified as strings (the translation to port numbers is done by
looking into /etc/services).
This particular entry was almost certainly an exploit of a "service" the hacker
started on your machine before that (probably something along the lines of
something stream tcp nowait root /bin/bash
to /etc/inetd.conf).

There are two known security bugs in Red Hat Linux 6.0; one is in wu-ftpd, the
other is in bind. Update to the current versions of wu-ftpd and bind, and
triple-check your system for trojan horses.

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