Two vulnerabilities were identified in Cisco IOS, which could be exploited by attackers to inject malicious HTML code.
The fisrt flaw is due to an input validation error in the "show" commands of the HTTP Server that do not properly validate certain data before being displayed in the web interface, which may be exploited by remote attackers to inject malicious HTML code that will execute arbitrary commands on the device (e.g. change the "ENABLE" password), including the possibility of gaining full administrative privileges on the device which is dependent on the privilege level of the authenticated user.
The second vulnerability is due to an input validation error in the web administration server package when processing and displaying CDP (Cisco Discovery Protocol) packets in the CDP status page, which could be exploited by attackers to execute arbitrary scripting code.
Credits
Vulnerabilities reported by Hugo Vazquez Carames and Digitalmunitions
ChangeLog
2005-11-29 : Initial release
2005-12-01 : Updated Description, Solution and References
2006-01-17 : Additional vulnerability reported by iDEFENSE
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