modtls.c in ProFTPD 1.3.2a does not properly handle a '\0' character in a domain name in the subject's alternative name (subjectAltName) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Upstream bug report: -------------------- http://bugs.proftpd.org/showbug.cgi?id=3275

Upstream patch: --------------- http://bugs.proftpd.org/attachment.cgi?id=3096

Multiple directory traversal vulnerabilities in the modsitemisc module in ProFTPD before 1.3.3c allow remote authenticated users to create directories, delete directories, create symlinks, and modify file timestamps via directory traversal sequences in a (1) SITE MKDIR, (2) SITE RMDIR, (3) SITE SYMLINK, or (4) SITE UTIME command.

Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via vectors involving an error that occurs after an FTP data transfer.

An integer overflow flaw was reported [1],[2] in the modsftp module of ProFTPD. If a specially crafted SSH message was sent to a ProFTPD server using modsftp, it could lead to the allocation of enormous amounts of memory and an eventual OOM termination by the kernel. This issue was assigned the name CVE-2011-1137 [3]. It was fixed in CVS [4],[5],[6]

References:

[1] http://bugs.proftpd.org/showbug.cgi?id=3586 [2] http://www.exploit-db.com/exploits/16129/ [3] http://www.openwall.com/lists/oss-security/2011/03/02/5 [4] http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/modsftp/packet.c?r1=1.14.2.2&r2=1.14.2.3 [5] http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/modsftp/packet.h?r1=1.3&r2=1.3.2.1 [6] http://proftp.cvs.sourceforge.net/viewvc/proftp/proftpd/contrib/modsftp/modsftp.c?r1=1.29.2.1&r2=1.29.2.2

ProFTPD before 1.3.5rc1, when using the UserOwner directive, allows local users to modify the ownership of arbitrary files via a race condition and a symlink attack on the (1) MKD or (2) XMKD commands.