공식 홈페이지 ( http://proftpd.org ) 에서 배포된 ProFTPD 1.3.3c에서 해결된

CVE-2010-3867의 취약점에 의해 백도어가 포함된 파일로 변조 되었다고 합니다.  

이하 메일링 리스트에 올라온 공지입니다.


ProFTPD Compromise Report

On Sunday, the 28th of November 2010 around 20:00 UTC the main
distribution server of the ProFTPD project was compromised. The
attackers most likely used an unpatched security issue in the FTP daemon
to gain access to the server and used their privileges to replace the
source files for ProFTPD 1.3.3c with a version which contained a backdoor.
The unauthorized modification of the source code was noticed by
Daniel Austin and relayed to the ProFTPD project by Jeroen Geilman on
Wednesday, December 1 and fixed shortly afterwards.

The fact that the server acted as the main FTP site for the ProFTPD
project (ftp.proftpd.org) as well as the rsync distribution server
(rsync.proftpd.org) for all ProFTPD mirror servers means that anyone who
downloaded ProFTPD 1.3.3c from one of the official mirrors from 2010-11-28
to 2010-12-02 will most likely be affected by the problem.

The backdoor introduced by the attackers allows unauthenticated users
remote root access to systems which run the maliciously modified version
of the ProFTPD daemon.

Users are strongly advised to check systems running the affected code for
security compromises and compile/run a known good version of the code.
To verify the integrity of the source files, use the GPG signatures
available on the FTP servers as well on the ProFTPD homepage at:

http://www.proftpd.org/md5_pgp.html.

The MD5 sums for the source tarballs are:

8571bd78874b557e98480ed48e2df1d2 proftpd-1.3.3c.tar.bz2
4f2c554d6273b8145095837913ba9e5d proftpd-1.3.3c.tar.gz

proftpd-1.3.3c.tar.bz2:

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEABECAAYFAkzLAWYACgkQt46JP6URl2qu3QCcDGXD+fRPOdKMp8fHyHI5d12E
83gAoPHBrjTFCz4MKYLhH8qqxmGslR2k
=aLli
-----END PGP SIGNATURE-----

proftpd-1.3.3c.tar.gz:

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEABECAAYFAkzLAW0ACgkQt46JP6URl2ojfQCfXy/hWE8G5mhdhdLpaPUZsofK
pO8Anj+uP0hQcn1E/CEUddI0mezlSCmg
=e8el
-----END PGP SIGNATURE-----

The PGP key of TJ Saunders has been used to sign the source tarballs;
it is available via MIT's public keyserver.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEARECAAYFAkz23FwACgkQt46JP6URl2pQ3QCfTWAZ8ZTGvruPD1pRJUpLM3gw
hUsAoLI4YnmXVgUIVhU2vFWD1rOYffEY
=3m3x
-----END PGP SIGNATURE-----

proftpd forum : http://forums.proftpd.org/smf/index.php/topic,5206.0.html

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