Published:2009/01/15  Last Updated:2009/01/15

JVN#28344798
Cisco IOS cross-site scripting vulnerability

Overview

The web-based interface implemented in Cisco IOS is vulnerable to cross-site scripting.

Products Affected

  • A wide range of versions are affected.

  • If the web-based interface is disabled, it is not affected. Some versions of the Cisco IOS have the web-based interface enabled by default.
    For more information, refer to the information provided by Cisco.

Description

Some versions of the Cisco IOS provide a web-based interface to configure the device. This web-based interface contains a cross-site scripting vulnerability.

Impact

An arbitrary script may be executed on the user's web browser.

Solution

Update the Software
Apply the latest firmware provided by Cisco.

Workaround
The users who are not able to update to the latest firmware should disable the web-based interface to mitigate this vulnerability.

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2009.01.15

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Medium
Exploit Complexity Low - little to no expertise and/or luck required to exploit (cross-site scripting)
  • High

Description of each analysis measures

Credit

NOBUHIRO TSUJI of NTT DATA SECURITY CORPORATION reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendor under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2008-3821
JVN iPedia JVNDB-2009-000006

Update History