Re: imapd/ipop3d coredump in slackware 3.4

[dgriffi () ULTRIX6 CS CSUBAK EDU (Dave)]

On Mon, 2 Feb 1998, Peter van Dijk wrote:

> [attic bug report nr. 1]
>
> While fooling around a little with NIS/YP (didn't get it completely
> working...) I ran into a bug in the imapd and ipop3d that come with
> slackware 3.4 (if you install the pine package).
> Earlier slackware versions will problably NOT suffer from this bug,
> because they did not include shadowing.
>
> When fed an unknown username, imapd and ipop3d will dump core:

[exploit snipped]

Slackware 3.3 includes does include shadowing.  Apparently, the stock
ipop3d is not vunerable, but imapd is.

thumper:/$ telnet thumper 110
Trying 127.0.0.1...
Connected to thumper.woods.com.
Escape character is '^]'.
+OK thumper POP3 Server (Version 1.005h) ready at <Sun Feb 01 23:09:25 1998>
user root
+OK please send PASS command
pass linux
-ERR invalid usercode or password, please try again
user john
+OK please send PASS command
pass doe
-ERR invalid usercode or password, please try again
quit
+OK arthur POP3 Server (Version 1.005h) shutdown.
Connection closed by foreign host.
thumper:/$ ls -l core
/bin/ls: core: No such file or directory
thumper:/$

thumper:/$ telnet thumper imap2
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
* OK thumper.woods.com IMAP2bis Service 7.8(100) at Sun, 1 Feb 1998
23:15:45 -0800 (PST)
A001 LOGIN root linux
A001 NO Bad LOGIN user name and/or password
A002 LOGIN john doe
Connection closed by foreign host.
thumper:/$ ls -l core
-rw-------   1 root     root       282624 Feb  1 23:16 core
thumper:/$


--
David Griffith
dgriffi () ultrix6 cs csubak edu