Vulnerabilities > CVE-2020-8113 - Improper Privilege Management vulnerability in Gitlab

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
gitlab
CWE-269
nessus

Summary

GitLab 10.7 and later through 12.7.2 has Incorrect Access Control.

Vulnerable Configurations

Part Description Count
Application
Gitlab
553

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.

Nessus

NASL familyFreeBSD Local Security Checks
NASL idFREEBSD_PKG_62F2182C5F7A11EAABB7001B217B3468.NASL
descriptionGitlab reports : Directory Traversal to Arbitrary File Read Account Takeover Through Expired Link Server Side Request Forgery Through Deprecated Service Group Two-Factor Authentication Requirement Bypass Stored XSS in Merge Request Pages Stored XSS in Merge Request Submission Form Stored XSS in File View Stored XSS in Grafana Integration Contribution Analytics Exposed to Non-members Incorrect Access Control in Docker Registry via Deploy Tokens Denial of Service via Permission Checks Denial of Service in Design For Public Issue Incorrect Access Control via LFS Import Unescaped HTML in Header Private Merge Request Titles Leaked via Widget Project Namespace Exposed via Vulnerability Feedback Endpoint Denial of Service Through Recursive Requests Project Authorization Not Being Updated Incorrect Permission Level For Group Invites Disclosure of Private Group Epic Information User IP Address Exposed via Badge images
last seen2020-03-18
modified2020-03-09
plugin id134335
published2020-03-09
reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/134335
titleFreeBSD : Gitlab -- Multiple Vulnerabilities (62f2182c-5f7a-11ea-abb7-001b217b3468)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(134335);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/11");

  script_cve_id("CVE-2020-8113");

  script_name(english:"FreeBSD : Gitlab -- Multiple Vulnerabilities (62f2182c-5f7a-11ea-abb7-001b217b3468)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Gitlab reports :

Directory Traversal to Arbitrary File Read

Account Takeover Through Expired Link

Server Side Request Forgery Through Deprecated Service

Group Two-Factor Authentication Requirement Bypass

Stored XSS in Merge Request Pages

Stored XSS in Merge Request Submission Form

Stored XSS in File View

Stored XSS in Grafana Integration

Contribution Analytics Exposed to Non-members

Incorrect Access Control in Docker Registry via Deploy Tokens

Denial of Service via Permission Checks

Denial of Service in Design For Public Issue

Incorrect Access Control via LFS Import

Unescaped HTML in Header

Private Merge Request Titles Leaked via Widget

Project Namespace Exposed via Vulnerability Feedback Endpoint

Denial of Service Through Recursive Requests

Project Authorization Not Being Updated

Incorrect Permission Level For Group Invites

Disclosure of Private Group Epic Information

User IP Address Exposed via Badge images"
  );
  # https://about.gitlab.com/releases/2020/03/04/gitlab-12-dot-8-dot-2-released/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2e8e392c"
  );
  # https://vuxml.freebsd.org/freebsd/62f2182c-5f7a-11ea-abb7-001b217b3468.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1754aa05"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8113");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:gitlab-ce");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/09");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=12.8.0<12.8.2")) flag++;
if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=12.7.0<12.7.7")) flag++;
if (pkg_test(save_report:TRUE, pkg:"gitlab-ce>=0<12.6.8")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");