FTP SITE EXEC can allow arbitrary command execution

ftp-execdotdot (618) The risk level is classified as HighHigh Risk

Description:

Certain versions of wu-ftpd permit the use of a SITE EXEC command to execute commands on a remote system. By providing a pathname with certain characteristics, a remote attacker could execute arbitrary commands on the FTP server, which could aid the attacker in gaining root-level access on the victim system.


Consequences:

Gain Access

Remedy:

Upgrade to the latest version of wu-ftp (2.4.2 or later), available from the Academ Consulting Services Web site. See References.

References:

  • CERT Advisory CA-1993-06: wuarchive ftpd Vulnerability.
  • CERT Advisory CA-1994-08: ftpd Vulnerabilities.
  • CERT Advisory CA-1995-16: wu-ftpd Misconfiguration Vulnerability.
  • BID-2241: wu-ftpd /bin SITE EXEC Misconfiguration Vulnerability
  • CVE-1999-0080: Certain configurations of wu-ftp FTP server 2.4 use a _PATH_EXECPATH setting to a directory with dangerous commands, such as /bin, which allows remote authenticated users to gain root access via the site exec command.

Platforms Affected:

  • Washington University WU-FTPD 2.4

Reported:

Not available

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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