Re: *ALERT* BID 3581: Wu-Ftpd File Globbing Heap Corruption Vulnerability

From: Brad (bradat_private)
Date: Wed Nov 28 2001 - 17:15:33 PST

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    OpenBSD's ftpd exhibits the same behavior, 2.9-stable, 3.0-stable and
    -current.
    
    // Brad
    
    bradat_private
    bradat_private
    
    >The FreeBSD ftpd on at least FreeBSD 4.4 and FreeBSD 5.0-current does
    >not crash but simply provides a normal 'ls' output even though script0r
    >sees his Linux port of the (Open)BSD ftpd crashing.
    >
    >--
    >Andre
    >
    >
    >script0r wrote:
    >>
    >> >
    >> > --------------------------------------------------------------------------
    >> -
    >> >                              Security Alert
    >> >
    >> > Subject:      Wu-Ftpd File Globbing Heap Corruption Vulnerability
    >> > BUGTRAQ ID:   3581                   CVE ID:         CVE-MAP-NOMATCH
    >> > Published:    Nov 27, 2001           Updated:        Nov 28, 2001
    >> > 01:12:56
    >> >
    >> > Remote:       Yes                    Local:          No
    >> > Availability: Always                 Authentication: Not Required
    >> > Credibility:  Vendor Confirmed       Ease:           No Exploit
    >> > Available Class:        Failure to Handle Exceptional Conditions
    >> >
    >> > Impact:   10.0           Severity: 10.0            Urgency:  8.2
    >> >
    >> > Last Change:  Initial analysis.
    >> > --------------------------------------------------------------------------
    >>
    >> I am running the a linux port of the bsd ftpd and it might be vulnerable to
    >> a similar attack,
    >>
    >> ftp localhost
    >> Connected to localhost.
    >> 220 playlandFTP server (Version 6.5/OpenBSD, linux port 0.3.3) ready.
    >> Name (localhost:user): ftp
    >> 331 Guest login ok, type your name as password.
    >> Password:
    >> 230 Guest login ok, access restrictions apply.
    >> Remote system type is UNIX.
    >> Using binary mode to transfer files.
    >> ftp> ls ~{
    >> 200 PORT command successful.
    >> 421 Service not available, remote server has closed connection
    >>
    >> in inetd I find an error stating that the ftpd process has died unexpectedly
    >>
    >> Nov 28 14:21:28 playland inetd[82]: pid 16341: exit signal 11
    



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