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Prevent endless post-authentication looping when encountering SYST errors.

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Closes #1478
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nnposter
2019-02-17 19:37:41 +00:00
parent 143fe3fec3
commit e006a18fa5
2 changed files with 7 additions and 1 deletions
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3
CHANGELOG
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@@ -1,5 +1,8 @@
#Nmap Changelog ($Id$); -*-text-*- #Nmap Changelog ($Id$); -*-text-*-
o [NSE][GH#1478] Updated script ftp-syst to prevent potential endless looping.
[nnposter]
o [NSE][GH#1457] New script, ubiquiti-discovery, which extracts information from o [NSE][GH#1457] New script, ubiquiti-discovery, which extracts information from
the Ubiquiti Discovery service and assists version detection. [Tom Sellers] the Ubiquiti Discovery service and assists version detection. [Tom Sellers]

5
scripts/ftp-syst.nse
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@@ -81,7 +81,7 @@ action = function(host, port)
-- SYST -- SYST
local auth_done = false local auth_done = false
local syst local syst = nil
repeat repeat
if not socket:send("SYST\r\n") then if not socket:send("SYST\r\n") then
return nil return nil
@@ -110,6 +110,9 @@ action = function(host, port)
if status then if status then
auth_done = true auth_done = true
end end
else
stdnse.debug1("SYST error: %d %s", code, message)
break
end end
until not auth_done until not auth_done