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Re: IBM-ERS Security Vulnerability Alert: The AIX ftp client


From: madecto () COMEDIA IT (Giulio E. D. Botto)
Date: Tue, 4 Nov 1997 19:34:13 +0100


af () C4C COM wrote:
[...]
Yes, but try "|sh" instead.  I've included a log of what happens.
BTW, I believe that this also happens on HP-UX 9.05

It works on our Linux slackware as well.  I suspect most ftp
clients are susceptible to this "problem."
I also wonder about IBM's answer:
[...]

SOLUTION:         Remove the setuid bit from the "ftp" command.

On our 4.2.1, ftp will not run if it is not suid.
Didn't somebody test this?

Andrew Green
af () c4c com

I've tried with root priviledges and it successfully worked with the
following OSes:

HPUX 9.05       (not setuid)
HPUX 9.07         "     "
HPUX 10.10        "     "
HPUX 10.20        "     "
Solaris 2.5.1     "     "
Solaris 2.6       "     "
AIX 3.2.5       (setuid)
AIX 4.1             "
NTAS 4.0            N/A

BTW ... all machines were updated with the latest patches from their
respective vendors.
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