Cisco ONS could allow FTP access with no account

cisco-ons-ftp-no-account (10505) The risk level is classified as HighHigh Risk


Cisco ONS15454 optical transport hardware and Cisco ONS15327 edge optical transport hardware running Cisco ONS software could allow a remote attacker to gain unauthorized FTP access. A remote attacker could use a non-existent username and password to gain unauthorized FTP access to the TCC, TCC+, or XTC interfaces. The attacker could use this vulnerability to upload malicious configuration files or delete software images.


Gain Access


Refer to Cisco Security Advisory 2002 October 31 at 1600 UTC for workaround information or information on obtaining a software upgrade. See References.


  • Cisco Systems Inc. Security Advisory, 2002 October 31 at 1600 UTC: Cisco ONS15454 and Cisco ONS15327 Vulnerabilities.
  • BID-6073: Cisco ONS15454/ONS15327 Optical Transport Platforms Multiple Vulnerabilities
  • BID-6076: Cisco ONS15454/ONS15327 Optical Transport Platforms Unauthorized FTP Access Vulnerability
  • CVE-2002-1553: Cisco ONS15454 and ONS15327 running ONS before 3.4 allows remote attackers to modify the system configuration and delete files by establishing an FTP connection to the TCC, TCC+ or XTC using a username and password that does not exist.
  • OSVDB ID: 8879: Cisco ONS FTP TCC/XTC Invalid Authentication System Modification

Platforms Affected:

  • Cisco ONS 15327 3.0
  • Cisco ONS 15327 3.1
  • Cisco ONS 15327 3.2
  • Cisco ONS 15327 3.3
  • Cisco ONS 15454 Optical Transport Platform 3.0
  • Cisco ONS 15454 Optical Transport Platform 3.1.0
  • Cisco ONS 15454 Optical Transport Platform 3.2.0
  • Cisco ONS 15454 Optical Transport Platform 3.3


Oct 31, 2002

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