The current logic times out every packet almost immediately, making it possible
for almost any non-trivial meterpreter session to receive duplicate packets.
This causes problems especially with any interactions that involve passing
resource handles or pointers back and forth between MSF and meterpreter, since
meterpreter can be told to operate on freed pointers, double-closes, etc.
This probably fixes tons of heisenbugs, including #3798.
To reproduce this, I enabled all debug messages in meterpreter to slow it
down, then ran this RC script with a reverse TCP meterpreter, after linking in
the test modules:
(cd modules/post
ln -s ../../test/modules/post/test)
die.rc:
use exploit/multi/handler
set payload windows/meterpreter/reverse_tcp
set lhost 192.168.43.1
exploit -j
sleep 5
use post/test/services
set SESSION 1
run
Rather than literally returning the default Regex object, override the accessor
to return the string representation. This allows the RPC backend to properly
serialize the options hash values, since msgpack does not know how to serialize
a Regexp object. Fixes#3798.
To verify the fix, run the steps for issue #3798 and ensure that the module
options are returned instead of a backtrace. Also, ensure that the module
continues to work as expected:
```
$ ./msfconsole -q
msf > use auxiliary/scanner/http/scraper
msf auxiliary(scraper) > info
Name: HTTP Page Scraper
Module: auxiliary/scanner/http/scraper
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
et <et@metasploit.com>
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
PATH / yes The test path to the page to analize
PATTERN (?i-mx:<title>(.*)<\/title>) yes The regex to use (default regex is a sample to grab page title)
Proxies no Use a proxy chain
RHOSTS yes The target address range or CIDR identifier
RPORT 80 yes The target port
THREADS 1 yes The number of concurrent threads
VHOST no HTTP server virtual host
override default attr for OptRegexp
Description:
Scrap defined data from a specific web page based on a regular
expresion
msf auxiliary(scraper) > set RHOSTS lwn.net
RHOSTS => lwn.net
msf auxiliary(scraper) > set RHOSTS 72.51.34.34
RHOSTS => 72.51.34.34
msf auxiliary(scraper) > set VHOST lwn.net
VHOST => lwn.net
msf auxiliary(scraper) > run
[*] [72.51.34.34] / [Welcome to LWN.net [LWN.net]]
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
```
See #4400. This should be all of them, except for, of course, the module
that targets Redmine itself.
Note that this also updates the README.md with more current information
as well.
This implements just for telnet, but assuming this strategy is kosher,
it's not too painful to add for the rest of the LoginScanner using the
old defaults used by `AuthBrute`.
See #3904, @dmaloney-r7 or @jlee-r7
Brent Cook
Meatballs
Joe Vennix
Tod Beardsley
Fernando Arias
Matt Buck
sinn3r
William Vu
Spencer McIntyre
Trevor Rosen
HD Moore
Sean Verity
Samuel Huckins
James Lee
dmaloney-r7
jvazquez-r7