Opera Telnet file overwrite

opera-telnet-file-overwrite (16139) The risk level is classified as MediumMedium Risk

Description:

Opera could allow a remote attacker to create or overwrite arbitrary files on the system. By creating a specially-crafted Telnet URL containing a dash (-) character prior to the hostname and followed by a command option, a remote attacker could create or overwrite files on the vulnerable system, once the URL is clicked.


Consequences:

File Manipulation

Remedy:

Upgrade to the latest version of Opera (7.50 or later), available from the Opera Web site. See References.

References:

  • iDEFENSE Security Advisory 05.12.04: Opera Telnet URI Handler File Creation/Truncation Vulnerability .
  • Opera Web site: Opera Internet Browser.
  • BID-10341: Multiple Vendor URI Protocol Handler Arbitrary File Creation/Modification Vulnerability
  • CVE-2004-0473: Argument injection vulnerability in Opera before 7.50 does not properly filter - characters that begin a hostname in a telnet URI, which allows remote attackers to insert options to the resulting command line and overwrite arbitrary files via (1) the -f option on Windows XP or (2) the -n option on Linux.
  • GLSA-200405-19: Opera telnet URI handler file creation/truncation vulnerability
  • SECTRACK ID: 1010142: Opera Telnet URL Processing Flaw Lets Remote Users Create or Overwrite Files

Platforms Affected:

  • Gentoo Linux
  • Opera Opera Browser 7.23

Reported:

May 12, 2004

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