vuln1.md

/* Considering the following program has all the other normal functionality can you identify what can go wrong here? Maybe I can if you don't want to */

use anchor_lang::prelude::*;

declare_id!("CeURMdWWbKoJe9BRvK1brgMik2EFrp1eB33SXWeA7pyW");

#[program]
pub mod let_me_claim_it {
    use super::*;

    pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
        Ok(())
    }

    pub fn claim_rewards(ctx: Context<ClaimRewards>) -> Result<()> {
        let user_account = &mut ctx.accounts.user_account;

        let clock_time = Clock::get()?;

        let reward = (clock_time.slot - user_account.deposit_time) - user_account.reward_debt;

        let cpi_accounts = MintTo {
            mint: ctx.accounts.staking_token.to_account_info(),
            to: ctx.accounts.user_staking_account.to_account_info(),
            authority: ctx.accounts.admin.to_account_info(),
        };
        let cpi_program = ctx.accounts.token_account.to_account_info();
        let cpi_ctx = CpiContext::new(cpi_program, cpi_accounts);
        token::mint_to(cpi_ctx, reward)?;

        user_account.reward_debt += reward;

        Ok(())
    }
}

#[derive(Accounts)]
pub struct ClaimRewards<'info> {
    /// User who is going to stake
    #[account(mut)]
    pub user: Signer<'info>,
    /// User account who is going to stake
    #[account(mut)]
    pub user_account: Account<'info, User>,
    /// CHECK: Just to check the owner
    #[account(mut)]
    pub admin: AccountInfo<'info>,
    /// The token which is going to be staked
    #[account(mut)]
    pub staking_token: InterfaceAccount<'info, Mint>,
    /// ATA of the token for user
    #[account(mut)]
    pub user_staking_account: InterfaceAccount<'info, TokenAccount>,
    /// ATA of the token for admin
    #[account(mut)]
    pub token_account: InterfaceAccount<'info, TokenAccount>,
    /// The token program for the token staking token
    pub token_program: Interface<'info, TokenInterface>,
} 

#[account]
pub struct Escrow {
    pub admin: Pubkey,
    pub token: Pubkey,
    pub total_amount: u64
}

#[account]
pub struct User {
    pub amount: u64,
    pub reward_debt: u64,
    pub deposit_time: u64
}