Submission Details
Severity:
creators would be unable to withdraw even if only a single user refunds
refund fails to reset the amount.raised causing withdraw to always revert with insufficient amount.
https://github.com/CodeHawks-Contests/2025-03-rustfund/blob/main/programs/rustfund/src/lib.rs#L66
pub fn refund(ctx: Context<FundRefund>) -> Result<()> {
let amount = ctx.accounts.contribution.amount;
if ctx.accounts.fund.deadline != 0 && ctx.accounts.fund.deadline > Clock::get().unwrap().unix_timestamp.try_into().unwrap() {
return Err(ErrorCode::DeadlineNotReached.into());
}
**ctx.accounts.fund.to_account_info().try_borrow_mut_lamports()? =
ctx.accounts.fund.to_account_info().lamports()
.checked_sub(amount)
.ok_or(ProgramError::InsufficientFunds)?;
**ctx.accounts.contributor.to_account_info().try_borrow_mut_lamports()? =
ctx.accounts.contributor.to_account_info().lamports()
.checked_add(amount)
.ok_or(ErrorCode::CalculationOverflow)?;
// Reset contribution amount after refund
ctx.accounts.contribution.amount = 0;//@audit info amount raised is not adjusted
Ok(())
}
Impact
creators cannot withdraw if a single user refunds
Recommendation
pub fn refund(ctx: Context<FundRefund>) -> Result<()> {
let amount = ctx.accounts.contribution.amount;
if ctx.accounts.fund.deadline != 0 && ctx.accounts.fund.deadline > Clock::get().unwrap().unix_timestamp.try_into().unwrap() {
return Err(ErrorCode::DeadlineNotReached.into());
}
**ctx.accounts.fund.to_account_info().try_borrow_mut_lamports()? =
ctx.accounts.fund.to_account_info().lamports()
.checked_sub(amount)
.ok_or(ProgramError::InsufficientFunds)?;
**ctx.accounts.contributor.to_account_info().try_borrow_mut_lamports()? =
ctx.accounts.contributor.to_account_info().lamports()
.checked_add(amount)
.ok_or(ErrorCode::CalculationOverflow)?;
// Reset contribution amount after refund
ctx.accounts.contribution.amount = 0;
+ ctx.accounts.fund.amount_raised -= amount;//@audit if contributor where to refund -> withdraw would always revert
Ok(())
}
Updates
Appeal created
bube 2 months ago
Submission Judgement Published Assigned finding tags:
`amount_raised` not updated in `refund` function
Rewards breakdown
nSLOC
170This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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