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Sablier
FoundryDeFi
20,000 USDC
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Submission Details
Severity: high
Invalid

[H-2]Single Point of Failure in Admin Control

Summary: The Adminable contract suffers from a single point of failure, where a single admin address holds complete control over the contract. If this address is compromised, an attacker can gain unauthorized access and potentially exploit the contract.

Vulnerability Details: The Adminable contract, as currently designed, suffers from a critical vulnerability known as a single point of failure. This means that a single entity, the admin, holds complete control over the contract. If this admin address is compromised, an attacker can gain unauthorized access and potentially exploit the contract for malicious purposes.

Exploitation Scenario:

  1. Compromise of Admin Address: An attacker could gain control of the admin address through various means, such as phishing attacks, social engineering, or hacking.

  2. Transfer of Adminship: The attacker could then transfer adminship to a malicious address under their control.

  3. Abuse of Privileges: The attacker could misuse the admin privileges to manipulate the contract's state, steal funds, or deploy malicious code.

You can verify it by using this test below in foundry:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
import "lib/forge-std/src/Test.sol"; //change the path if you need to
import "src/abstracts/Adminable.sol"; //change the path if you need to
contract ConcreteAdminable is Adminable {
constructor() {
admin = address(1);
}
}
contract AdminableTest is Test {
ConcreteAdminable public adminable;
function setUp() public {
adminable = new ConcreteAdminable();
}
function testPrivilegeEscalation() public {
// Simulate a malicious actor gaining control of the initial admin
vm.startPrank(address(1));
adminable.transferAdmin(address(2));
vm.stopPrank();
// Malicious actor (address 2) transfers adminship to themselves
vm.startPrank(address(2));
adminable.transferAdmin(address(3));
vm.stopPrank();
// Assert that the admin has been changed to the attacker's address
assertEq(adminable.admin(), address(3));
}
}

The test should pass.

Potential Impact:

  • Unauthorized Access: An attacker could gain full control over the contract, enabling them to execute arbitrary actions.

  • Financial Loss: The attacker could drain funds from the contract or transfer assets to unauthorized addresses.

  • Reputation Damage: A security breach can tarnish the project's reputation and erode user trust.

  • System Disruption: The attacker could disrupt the normal functioning of the contract, leading to service outages and user inconvenience.

Tools Used: Slither and Aderyn.

Recommendations:

Multi-Signature Wallets:

  • Use a multi-signature wallet for the admin address, requiring multiple signatures for critical actions. This reduces the risk of a single point of failure.

Timelock Contracts:

  • Introduce a timelock mechanism that delays critical actions, giving time to react in case of malicious intent.

Access Control:

Role-Based Access Control (RBAC): Implement RBAC to grant specific permissions to different roles, limiting the impact of a compromised account.

  • Least Privilege Principle: Grant users only the minimum permissions necessary to perform their tasks.

  • Regular Review of Access Permissions: Periodically review and update access permissions to ensure they remain appropriate.

Updates

Lead Judging Commences

inallhonesty Lead Judge 9 months ago
Submission Judgement Published
Invalidated
Reason: Non-acceptable severity
inallhonesty Lead Judge 9 months ago
Submission Judgement Published
Invalidated
Reason: Non-acceptable severity

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