Submission Details
Severity:
Only Owner Check Missing
Summary
It's scaring, I found that anyone can set or update the password. The owner of the Smart contract PasswordStore has no protection in place to authoritatively set a new password or update an existing one.
Vulnerability Details
modifier onlyOwner() {
if (msg.sender != s_owner) revert PasswordStore__NotOwner();
_;
}
// function setPassword(string memory newPassword) external { ❌ onlyowner check is missing.
function setPassword(string memory newPassword) external onlyOwner {
// onlyowner check was missing , I accomplish DRY. Therefore using onlyOwner modifier. ✅
// statements...
}
Impact
The PasswordStore Smart contract is worthless if it has no authorized Password store & update mechanism. Therefore it would be considered a crap without that mechanism.
Tools Used
Manually Hunted.
Recommendations
Use my modifier if you also empower DRY or use a if check inside setPassword function.
Updates
Lead Judging Commences
inallhonesty about 2 years ago
Submission Judgement Published Assigned finding tags:
finding-lacking-access-control
Anyone can call `setPassword` and set a new password contrary to the intended purpose.
Rewards breakdown
nSLOC
20This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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