nmap 'ssl-enum-ciphers' does not display all ciphers

["Lemons, Terry" <Terry.Lemons () dell com>]

Hi

I've been using nmap's 'ssl-enum-ciphers' script to probe a nginx system using the following cipher settings:

  ssl_prefer_server_ciphers on;
  ssl_protocols   TLSv1.2 TLSv1.1 TLSv1;
  ssl_ciphers 
"DHE-RSA-AES256-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDH-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDH-RSA-AES128-GCM-SHA256:ECDH-ECDSA-AES128-GCM-SHA256";

I expected 'ssl-enum-ciphers' to show all of these ciphers.  But, it shows only two:

ledmf081:~ # nmap -sV -p 443 --script ssl-enum-ciphers 10.7.104.53

Starting Nmap 6.46 ( http://nmap.org ) at 2018-01-09 18:19 EST
Nmap scan report for 10.7.104.53
Host is up (0.046s latency).
PORT    STATE SERVICE VERSION
443/tcp open  http    nginx
| ssl-enum-ciphers:
|   SSLv3: No supported ciphers found
|   TLSv1.0: No supported ciphers found
|   TLSv1.1: No supported ciphers found
|   TLSv1.2:
|     ciphers:
|       TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 - strong
|       TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 - strong
|     compressors:
|       NULL
|_  least strength: strong

Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 7.66 seconds
ledmf081:~ #

Is this a known defect?

My environment is:

ledmf081:~ # nmap -v

Starting Nmap 6.46 ( http://nmap.org ) at 2018-01-09 18:20 EST
Read data files from: /usr/bin/../share/nmap
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 0.06 seconds
           Raw packets sent: 0 (0B) | Rcvd: 0 (0B)
ledmf081:~ #

ledmf081:~ # cat /etc/os-release
NAME="SLES"
VERSION="12-SP3"
VERSION_ID="12.3"
PRETTY_NAME="SUSE Linux Enterprise Server 12 SP3"
ID="sles"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:12:sp3"
ledmf081:~ #

Thanks!
tl




Terry Lemons
[DellEMC_Logo_Hz_Blue_rgb_10percent]| Data Protection Division

171 South Street, MS 1/C-6
Hopkinton MA 01748
774 803 2892
terry.lemons () dell com<mailto:terry.lemons () dell com>

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