Multiple auction can run on same vault - Collateral loss

Lines of code Vulnerability details Impact Due to insufficient checks, it is possible to run 2 auctions at same time. This can lead to loss of collateral for this vault as collateral quantity placed for auction will double Proof of Concept 1. User starts auction on vault id 1 which transfer...

There is no boundaries for starting an auction.

Lines of code Vulnerability details Impact The team has brought this contest to be fairer to their users in terms of liquidation mechanism. Looking through this perspective, it can be developed more on the process to be much fairer to the users in volatile market conditions. Proof of Concept The...

Incorrect amount of Collateral moves for Auction

Lines of code Vulnerability details Impact It was observed that the debt and collateral which moves for Auction is calculated incorrectly. In case where line.proportion is set to small value, chances are art will become lower than min debt. This causes whole collateral to go for auction, which wa...

Vault owners can grief auctioneers by cancelling auctions

Lines of code Vulnerability details Since auctioneers are only paid keeper incentives on successful bids, a malicious vault owner can grief auctioneers by creating a risky vault, luring an auctioneer to start an auction, and then immediately canceling it. This is a somewhat elaborate and risky...

Vaults are not locked properly

Lines of code Vulnerability details Impact Even though after Auction starts, Vault ownership moves to Witch but still Cauldron Admin can perform operations on this Vault. This includes transferring funds from a Vault which has live Auction ongoing Proof of Concept 1. Auction is started on Vault i...

auction.start might be zero after a new auction is created.

Lines of code Vulnerability details Impact Currently several functions consider the auction is valid when auction.start 0 and they don't work properly when auction.start = 0. Proof of Concept In this part, auction.start = 0 when block.timestamp = 232 exactly. Of course, this is an edge case and...

limits_.sum is not increased yet when performing limit check. Collateral may exceed the limit.

Lines of code Vulnerability details Impact limits.sum is not increased yet when performing limit check. Collateral may exceed the limit. There is a limit on how much collateral can be concurrently put at auction, but it is a soft limit. If the limit has been surpassed, no more vaults of that...

Someone can create non-liquidatable auction if the collateral asset fails on transferring to address(0)

Lines of code Vulnerability details Impact might lead to systematic debt. Cause errors for liquidators to run normally. Proof of Concept In the function auction, there is on input validation around whether the to is address0 or not. and if the auctioneerReward is set to an value 0 as default, eac...

Collateral limit can be bypassed in auction

Lines of code Vulnerability details Collateral limit could be bypassed, allowing more collateral to be auctioned concurrently than intended by governance. // There is a limit on how much collateral can be concurrently put at auction, but it is a soft limit. // If the limit has been surpassed, no...

Incorrect payout calculation due to a division before multiplication

Lines of code Vulnerability details Impact Reverse dutch auction price is calculated incorrectly Proof of Concept In the function calcPayout which calculates reverse dutch auction according to the formula inkOut = artIn / totalArt totalInk p + 1 - p t t is always zero because you divide before...

Reduce the incentive of self liquidation

Lines of code Vulnerability details Reduce the incentive of self liquidation Impact In some situations the borrower may have incentive to self liquidate. For example: May pay less interest Redeem early and reduce the loss or the fee React to abrupt market volitility Other cases to circumvent some...

Closing auction return value Of cauldron is not checked

Lines of code Vulnerability details Impact When the auction is ended, cauldron gaves vault id with related parameters. However, the return value is not checked on the cauldron. If the cauldron does not revert, the protocol can delete auction without functionality. Proof of Concept Tools Used Code...

Caller Can Receive Both liquidatorCut and auctioneerCut

Lines of code Vulnerability details Impact Caller can call auction from one address then call payBase or payFYToken from another address receiving both liquidatorCut and auctioneerCut. Proof of Concept A caller calls auction passing in an address the caller controls, Address A, into the to...

The auction doesn't check who puts a vault up for auction and can lead to a denial of service attack, and other actions beneficiary an attacker

Lines of code Vulnerability details Impact The permission for whoever can set an undercollaterized vault up for auction is not checked, an arbitrary user can set any vault for auction, set themselves up as the auctioneer and also get the reward. The real owners of the vault wont be able to their...

CVE-2017-20138

A vulnerability was found in Itech Auction Script 6.49. It has been classified as critical. This affects an unknown part of the file /mcategory.php. The manipulation of the argument mcid with the input 4' AND 1734=1734 AND 'Ggks'='Ggks leads to sql injection Blind. It is possible to initiate the...

CVE-2017-20138

A vulnerability was found in Itech Auction Script 6.49. It has been classified as critical. This affects an unknown part of the file /mcategory.php. The manipulation of the argument mcid with the input 4' AND 1734=1734 AND 'Ggks'='Ggks leads to sql injection Blind. It is possible to initiate the...

Sql injection

A vulnerability was found in Itech Auction Script 6.49. It has been classified as critical. This affects an unknown part of the file /mcategory.php. The manipulation of the argument mcid with the input 4' AND 1734=1734 AND 'Ggks'='Ggks leads to sql injection Blind. It is possible to initiate the...

CVE-2017-20138

CVE-2017-20138 pertains to Itech Auction Script 6.49. Multiple connected documents confirm a blind SQL injection in /mcategory.php via the mcid parameter (example input: 4' AND 1734=1734 AND 'Ggks'='Ggks), with remote exploitability. The issue affects the mcategory.php component and is identified...

CVE-2017-20138 Itech Auction Script mcategory.php Blind sql injection

A vulnerability was found in Itech Auction Script 6.49. It has been classified as critical. This affects an unknown part of the file /mcategory.php. The manipulation of the argument mcid with the input 4' AND 1734=1734 AND 'Ggks'='Ggks leads to sql injection Blind. It is possible to initiate the...

CVE-2017-20138 Itech Auction Script mcategory.php Blind sql injection

A vulnerability was found in Itech Auction Script 6.49. It has been classified as critical. This affects an unknown part of the file /mcategory.php. The manipulation of the argument mcid with the input 4' AND 1734=1734 AND 'Ggks'='Ggks leads to sql injection Blind. It is possible to initiate the...