http://seclists.org/nmap-dev/2012/q2/54
This patch is from Daniel Miller. He writes:
I've just finished enhancing the nfs-ls, nfs-statfs, and nfs-showmount
scripts so that they can run based on version detection information,
for cases where the portmapper is firewalled. For nfs-ls and
nfs-statfs, this required making a hostrule to check that both a
mountd service and a nfs service were detected. In the process, I
ended up adding the AUTH_UNIX flavor to rpc.lua, since the RFC states
that AUTH_NULL can only be used for the NULL procedure (and my Linux
nfs-kernel-server was enforcing that).
Other minor changes:
* If running privileged, attempt to bind to a reserved port. Many NFS
servers refuse to talk to source ports >1024, as a "security measure"
* handle an odd case in nfs-ls where READDIRPLUS does not return file
attributes. Chose to use all ?'s, but in the future maybe a direct
GETATTR call?
* remove reference to nfs.dirlist argument from nfs-ls doc, since it is unused
o Create the mutex in the RpcInfo() function before the connect call, to prevent some rare race conditions that can cause one of the running rpc and nfs scripts to fail. This mutex is used to cache the portmapper program list in the registry, to reduce the number of connections and RPC DUMP procedure calls.
o whitespace formatting.
socket:connect(host.ip, port.number)
socket:connect(host.ip, port.number, port.protocol)
to this:
socket:connect(host, port)
connect can take host and port tables now, and the default protocol is
taken from the port table if possible.
top of the first comment, so the entire description got stuffed into the
@author field. I also discovered a limitation in the NSEDoc parser: the
first non-empty line following the first --- comment must be the
"module" call, or else the block isn't recognized as belonging to a
module. This was preventing @args from appearing in certain libraries.
Djalal Harouni told me about this.
nfs-showmount scripts to use the new library. The new scripts are:
- nfs-acls shows the owner and directory mode of NFS exports
- nfs-dirlist lists the contents of NFS exports
- nfs-statfs shows file system statistics for NFS exports
[Patrik]
