incorrect dates returned by ssl-cert.nse

[Matt Selsky <selsky () columbia edu>]

$ nmap --script=ssl-cert.nse -p 443 host.domain

Starting Nmap 5.05BETA1 ( http://nmap.org ) at 2009-10-24 00:43 EDT
NSE: Script Scanning completed.
Interesting ports on host.domain (192.168.1.1):
PORT    STATE SERVICE
443/tcp open  https
|  ssl-cert: Subject: commonName=host.domain/ 
organizationName=Organization/stateOrProvinceName=State/ 
countryName=Country
|  Issuer: organizationName=Equifax/countryName=US
|  Not valid before: 2008-11-15 21:54:00
|  Not valid after:  2009-12-15 22:54:00
|  MD5:   e71c 81a7 cc93 a3cf 12fd d9e0 45fd d072
|_ SHA-1: 9bbd 2da6 963c 7440 6b75 6ba7 7fea 9da0 2fd4 a266

Nmap done: 1 IP address (1 host up) scanned in 0.15 seconds

But the actual certificate dates are:

2008-10-15 21:54:00
2008-11-15 22:54:00

The NSE script has both dates off by a month.

Let me know if you need access to my public certificate to verify/ 
reproduce the problem.

Cheers,


--
Matt
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