Vulnerabilities > CVE-2013-4267 - OS Command Injection vulnerability in Pydio

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
pydio
CWE-78
critical
nessus
NVD
Published: 2020-02-11
Updated: 2024-11-21

Summary

Ajaxeplorer before 5.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) archive_name parameter to the Power FS module (plugins/action.powerfs/class.PowerFSController.php), a (2) file name to the getTrustSizeOnFileSystem function in the File System (Standard) module (plugins/access.fs/class.fsAccessWrapper.php), or the (3) revision parameter to the Subversion Repository module (plugins/meta.svn/class.SvnManager.php).

Vulnerable Configurations

Part Description Count
Application
Pydio
44

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
  • Command Delimiters
    An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
  • Exploiting Multiple Input Interpretation Layers
    An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
  • Argument Injection
    An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
  • OS Command Injection
    In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.

Nessus

NASL familyCGI abuses
NASL idAJAXPLORER_5_0_1.NASL
descriptionThe version of AjaXplorer hosted on the remote web server is earlier than 5.0.1. It is, therefore, affected by multiple command execution vulnerabilities in the following plugins: - File System Standard Plugin (access.fs) - Power FS Plugin (action.powerfs) - Subversion Repository Plugin (meta.svn) The plugins above are installed and enabled in the default installation except for the Power FS plugin, which is installed but not enabled by default.
last seen2020-06-01
modified2020-06-02
plugin id70495
published2013-10-18
reporterThis script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/70495
titleAjaXplorer < 5.0.1 Multiple Command Execution Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");


if (description)
{
  script_id(70495);
  script_version("1.3");
  script_cvs_date("Date: 2018/11/15 20:50:16");

  script_cve_id("CVE-2013-4267");
  script_bugtraq_id(60863);

  script_name(english:"AjaXplorer < 5.0.1 Multiple Command Execution Vulnerabilities");
  script_summary(english:"Checks version of remote web application.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"A web application on the remote web server has multiple
vulnerabilities."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The version of AjaXplorer hosted on the remote web server is earlier
than 5.0.1.  It is, therefore, affected by multiple command execution
vulnerabilities in the following plugins:

  - File System Standard Plugin (access.fs)
  - Power FS Plugin (action.powerfs)
  - Subversion Repository Plugin (meta.svn)

The plugins above are installed and enabled in the default installation
except for the Power FS plugin, which is installed but not enabled by
default."
  );
  script_set_attribute(attribute:"see_also", value:"http://pyd.io/ajaxplorer-5-0-1/");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/oss-sec/2013/q3/28");
  script_set_attribute(attribute:"solution", value:"Upgrade to AjaXplorer version 5.0.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/06/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/06/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ajaxplorer:ajaxplorer");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");

  script_dependencies("ajaxplorer_detect.nasl");
  script_require_keys("www/ajaxplorer");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("webapp_func.inc");


port = get_http_port(default:80);

install = get_install_from_kb(appname:'ajaxplorer', port:port, exit_on_fail:TRUE);

version = install['ver'];
base_url = build_url(qs:install['dir']+'/', port:port);

fixed_ver = '5.0.1';
if (ver_compare(ver:version, fix:fixed_ver, strict:FALSE) == -1)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  URL               : ' + base_url +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fixed_ver +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else audit(AUDIT_WEB_APP_NOT_AFFECTED, 'AjaXplorer', base_url, version);

References