Vulnerabilities > CVE-2017-18044 - OS Command Injection vulnerability in Commvault 11.0
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
A Command Injection issue was discovered in ContentStore/Base/CVDataPipe.dll in Commvault before v11 SP6. A certain message parsing function inside the Commvault service does not properly validate the input of an incoming string before passing it to CreateProcess. As a result, a specially crafted message can inject commands that will be executed on the target operating system. Exploitation of this vulnerability does not require authentication and can lead to SYSTEM level privilege on any system running the cvd daemon. This is a different vulnerability than CVE-2017-3195.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 6 |
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.
Metasploit
| description | This module exploits a command injection vulnerability discovered in Commvault Service v11 SP5 and earlier versions (tested in v11 SP5 and v10). The vulnerability exists in the cvd.exe service and allows an attacker to execute arbitrary commands in the context of the service. By default, the Commvault Communications service installs and runs as SYSTEM in Windows and does not require authentication. This vulnerability was discovered in the Windows version. The Linux version wasn't tested. |
| id | MSF:EXPLOIT/WINDOWS/MISC/COMMVAULT_CMD_EXEC |
| last seen | 2020-06-02 |
| modified | 2018-07-12 |
| published | 2017-12-22 |
| references | |
| reporter | Rapid7 |
| source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/misc/commvault_cmd_exec.rb |
| title | Commvault Communications Service (cvd) Command Injection |
Nessus
NASL family Windows NASL id COMMVAULT_11_SP7_LOCAL.NASL description The version of Commvault running on the remote web server is 11 prior to 11 SP7. It is, therefore, affected by multiple vulnerabilities: - A buffer overflow vulnerability exists in the Commvault Edge communication service (cvd). An remote, unauthenticated attacker could achieve arbitrary code execution by sending a specially crafted packet. (CVE-2017-3195) - A command injection vulnerability exists in CVDataPipe.dll. An unauthenticated, remote attacker can exploit this, via a specially crafted message to CreateProcess, to execute arbitrary commands as SYSTEM. (CVE-2017-18044) last seen 2020-06-01 modified 2020-06-02 plugin id 126988 published 2019-07-25 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126988 title Commvault 11 < 11 SP7 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(126988); script_version("1.3"); script_cvs_date("Date: 2019/08/12 17:35:39"); script_cve_id("CVE-2017-3195","CVE-2017-18044"); script_bugtraq_id(96941); script_xref(name:"IAVA", value:"2019-A-0181"); script_name(english:"Commvault 11 < 11 SP7 Multiple Vulnerabilities"); script_summary(english:"Checks for the product version and service pack."); script_set_attribute(attribute:"synopsis", value: "The Commvault install running on the remote host is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Commvault running on the remote web server is 11 prior to 11 SP7. It is, therefore, affected by multiple vulnerabilities: - A buffer overflow vulnerability exists in the Commvault Edge communication service (cvd). An remote, unauthenticated attacker could achieve arbitrary code execution by sending a specially crafted packet. (CVE-2017-3195) - A command injection vulnerability exists in CVDataPipe.dll. An unauthenticated, remote attacker can exploit this, via a specially crafted message to CreateProcess, to execute arbitrary commands as SYSTEM. (CVE-2017-18044)"); # https://www.securifera.com/advisories/cve-2017-18044/ script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f582085c"); # http://kb.commvault.com/article/SEC0013 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e7d23884"); script_set_attribute(attribute:"solution", value: "Upgrade to Commvault v11 SP6 and install hotfix 590, v11 SP7 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-3195"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'Commvault Communications Service (cvd) Command Injection'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/15"); script_set_attribute(attribute:"patch_publication_date", value:"2017/12/15"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/25"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"cpe:/a:commvault:commvault"); script_set_attribute(attribute:"stig_severity", value:"I"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Windows"); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("commvault_win_installed.nbin"); script_require_keys("installed_sw/Commvault"); exit(0); } include("vcf.inc"); include("vcf_extras.inc"); app_info = vcf::commvault::get_app_info_windows(); constraints = [{"min_version" : "11", "fixed_version": "11.0.0.6.590", "fixed_display":"11 SP6 & hotfix 590 / 11 SP7"}]; vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);NASL family Misc. NASL id COMMVAULT_11_SP7.NASL description The version of Commvault running on the remote web server is 11 prior to 11 SP7. It is, therefore, affected by multiple vulnerabilities: - A buffer overflow vulnerability exists in the Commvault Edge communication service (cvd). An remote, unauthenticated attacker could achieve arbitrary code execution by sending a specially crafted packet. (CVE-2017-3195) - A command injection vulnerability exists in CVDataPipe.dll. An unauthenticated, remote attacker can exploit this, via a specially crafted message to CreateProcess, to execute arbitrary commands as SYSTEM. (CVE-2017-18044) last seen 2020-06-01 modified 2020-06-02 plugin id 125782 published 2019-06-07 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125782 title Commvault 11 < 11 SP7 Multiple Vulnerabilities code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(125782); script_version("1.4"); script_cvs_date("Date: 2019/07/25 7:07:22"); script_cve_id("CVE-2017-3195","CVE-2017-18044"); script_bugtraq_id(96941); script_xref(name:"IAVA", value:"2019-A-0181"); script_name(english:"Commvault 11 < 11 SP7 Multiple Vulnerabilities"); script_summary(english:"Checks for the product version and service pack."); script_set_attribute(attribute:"synopsis", value: "The Commvault install running on the remote host is affected by multiple vulnerabilities."); script_set_attribute(attribute:"description", value: "The version of Commvault running on the remote web server is 11 prior to 11 SP7. It is, therefore, affected by multiple vulnerabilities: - A buffer overflow vulnerability exists in the Commvault Edge communication service (cvd). An remote, unauthenticated attacker could achieve arbitrary code execution by sending a specially crafted packet. (CVE-2017-3195) - A command injection vulnerability exists in CVDataPipe.dll. An unauthenticated, remote attacker can exploit this, via a specially crafted message to CreateProcess, to execute arbitrary commands as SYSTEM. (CVE-2017-18044)"); # https://www.securifera.com/advisories/cve-2017-18044/ script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f582085c"); # http://kb.commvault.com/article/SEC0013 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e7d23884"); script_set_attribute(attribute:"solution", value: "Upgrade to Commvault v11 SP6 and install hotfix 590, v11 SP7 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-3195"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"metasploit_name", value:'Commvault Communications Service (cvd) Command Injection'); script_set_attribute(attribute:"exploit_framework_metasploit", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/15"); script_set_attribute(attribute:"patch_publication_date", value:"2017/12/15"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/06/07"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:commvault:commvault"); script_set_attribute(attribute:"potential_vulnerability", value:"true"); script_set_attribute(attribute:"stig_severity", value:"I"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Misc."); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("commvault_web_console_detect.nbin"); script_require_keys("installed_sw/Commvault", "Settings/ParanoidReport"); script_require_ports("Services/www", 80, 443); exit(0); } include("http.inc"); include("vcf.inc"); include("vcf_extras.inc"); # Can't detect hotfix if (report_paranoia < 2) audit(AUDIT_PARANOID); port = get_http_port(default:80); # get_app_info wrapper converts version string to <version>-SP<service pack> # for ease of writing constraints app = vcf::commvault::get_webapp_info(port:port); constraints = [{"min_version" : "11", "fixed_version" : "11-SP7", "fixed_display":"11 SP6 & hotfix 590 / 11 SP7"}]; vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);