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.

A heap-based buffer overflow flaw was found in the way ProFTPD FTP server prepared SQL queries for certain usernames, when the modsql module was enabled. A remote, unauthenticated attacker could use this flaw to cause proftpd daemon to crash or, potentially, to execute arbitrary code with the privileges of the user running 'proftpd' via a specially-crafted username, provided in the authentication dialog.

Upstream bug report: [1] http://bugs.proftpd.org/showbug.cgi?id=3536

References: [2] http://www.securityfocus.com/bid/44933 [3] http://phrack.org/issues.html?issue=67&id=7#article [4] http://bugs.gentoo.org/showbug.cgi?id=348998 [5] http://proftpd.org/docs/RELEASENOTES-1.3.3d (ProFTPD v1.3.3d release notes)

CVE identifier: [6] http://www.openwall.com/lists/oss-security/2011/01/14/6