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Make nfs-ls work with new rpc-grind

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rpc-grind script puts version information in a different place. Also
switched from using file-local variables to host-registry entries for
nfs and mount ports and versions. I'm pretty sure the old way would have
failed on scans with more than one NFS version on separate machines.
This commit is contained in:
dmiller
2012-08-18 03:32:52 +00:00
parent 4728d7437d
commit 592f31fa0f
1 changed files with 40 additions and 12 deletions
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52
scripts/nfs-ls.nse
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@@ -84,13 +84,19 @@ These access permissions are shown only with NFSv3:
author = "Patrik Karlsson, Djalal Harouni"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}
dependencies = {"rpc-grind"}
portrule = shortport.port_or_service(111, "rpcbind", {"tcp", "udp"} )
local mountport = nil
local nfsport = nil
hostrule = function(host)
local mountport, nfsport
if host.registry.nfs then
mountport = host.registry.nfs.mountport
nfsport = host.registry.nfs.nfsport
else
host.registry.nfs = {}
end
for _,proto in ipairs({"tcp","udp"}) do
local port = nmap.get_ports(host, nil, proto, "open")
while port do
@@ -107,11 +113,33 @@ hostrule = function(host)
if mountport and nfsport then break end
end
if nfsport == nil then return false end
if nfsport.version.rpc_highver == 4 and nfsport.version.rpc_lowver <= 3 then
nfsport.version.rpc_goodver = 3
else
nfsport.version.rpc_goodver = nfsport.version.rpc_highver
if host.registry.nfs.nfsver == nil then
local low, high = string.match(nfsport.version.version, "(%d)-(%d)")
if high == nil then
high = tonumber(nfsport.version.version)
if high == 4 then
return false --Can't support version 4
else
host.registry.nfs.nfsver = high
end
else
if high == "4" then
host.registry.nfs.nfsver = 3
else
host.registry.nfs.nfsver = tonumber(low)
end
end
end
if host.registry.nfs.mountver == nil then
local low, high = string.match(mountport.version.version, "(%d)-(%d)")
if high == nil then
host.registry.nfs.mountver = tonumber(mountport.version.version)
else
host.registry.nfs.mountver = tonumber(high)
end
end
host.registry.nfs.mountport = mountport
host.registry.nfs.nfsport = nfsport
return (mountport and nfsport)
end
@@ -345,8 +373,8 @@ hostaction = function(host)
ShowMounts = function(ahost)
local mnt_comm, status, result, mounts
local mnt = rpc.Mount:new()
mnt_comm = rpc.Comm:new('mountd', mountport.version.rpc_highver)
status, result = mnt_comm:Connect(ahost, mountport)
mnt_comm = rpc.Comm:new('mountd', host.registry.nfs.mountver)
status, result = mnt_comm:Connect(ahost, host.registry.nfs.mountport)
if ( not(status) ) then
stdnse.print_debug(4, "ShowMounts: %s", result)
return false, result
@@ -364,9 +392,9 @@ hostaction = function(host)
local mountd, mnt_comm
local mnt = rpc.Mount:new()
mnt_comm = rpc.Comm:new("mountd", mountport.version.rpc_highver)
mnt_comm = rpc.Comm:new("mountd", host.registry.nfs.mountver)
status, err = mnt_comm:Connect(host, mountport)
status, err = mnt_comm:Connect(host, host.registry.nfs.mountport)
if not status then
stdnse.print_debug(4, "MountPath: %s", err)
return nil, err
@@ -385,8 +413,8 @@ hostaction = function(host)
NfsOpen = function(ahost)
local nfs_comm, status, err
nfs_comm = rpc.Comm:new('nfs', nfsport.version.rpc_goodver)
status, err = nfs_comm:Connect(host, nfsport)
nfs_comm = rpc.Comm:new('nfs', host.registry.nfs.nfsver)
status, err = nfs_comm:Connect(host, host.registry.nfs.nfsport)
if not status then
stdnse.print_debug(4, "NfsOpen: %s", err)
return nil, err