Denial of service for NFT's

Handle gpersoon Vulnerability details Impact The function removeNft uses more gas as more NFT's are added. An attacker can send random NFT's to the contract, which are received via onERC721Received. This functions adds the NFT's to the array nfts, using the function addNft. The longer the nfts...

Unbounded for-loop bricks transferERC721()

Handle toastedsteaksandwich Vulnerability details Impact The nfts array in the Visor contract could become overpopulated, causing certain functions that loop over it to brick, due to the gas limit. These functions include transferERC721 and getNftIdByTokenIdAndAddr. The severity of this issue is...

PYSEC-2021-674

TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a runtime division by zero error and denial of service in tf.rawops.QuantizedBatchNormWithGlobalNormalization. This is because the...

Randomization of NFTs returned in redeem/swap operations can be brute-forced

Handle 0xRajeev Vulnerability details Impact If we assume that certain NFTs in a vault over time will have different market demand/price then the users will try to redeem those specific NFTs. Even if direct redeems are disabled to prevent such a scenario to default to returning randomized NFTs, a...

mintRequests can remain 0 when the token is erc721

Handle paulius.eth Vulnerability details Impact Contract NFTXMintRequestEligibility function requestMint sets mintRequests to the amount that was minted, however, it does not check that amounti 0, so it is possible that when the token is not erc1155, the amount has a value of 0 but the token is...

Use safeTransfer/safeTransferFrom consistently instead of transfer/transferFrom

Handle 0xRajeev Vulnerability details Impact It is good to add a require statement that checks the return value of token transfers or to use something like OpenZeppelin’s safeTransfer/safeTransferFrom unless one is sure the given token reverts in case of a failure. Failure to do so will cause...

Fee Distribution Re-Entrancy

Handle 0xsomeone Vulnerability details Impact The distribute function of NFTXFeeDistributor has no access control and will invoke a fallback on the fee receivers, meaning that a fee receiver can re-enter via this function to acquire their allocation repeatedly potentially draining the full balanc...

EIP-721 / EIP-1155 Re-Entrancy Vulnerability

Handle 0xsomeone Vulnerability details Impact The impact of this finding is difficult to estimate as the contract system within scope is limited in how the various components are meant to be utilized. A definitive side-effect of this re-entrancy is the delayed application of the afterRedeemHook...

_recordBurn calls _updateEmission afterwards

Handle paulius.eth Vulnerability details Impact contract Vether4 function recordBurn first does all the calculations and only at the end calls updateEmission. This means that in theory last user still contributes to the previous day even though this day has already passed. So it is possible to...

init functions can be frontrun

Handle @cmichelio Vulnerability details Vulnerability Details The init function that initializes important contract state can be called by anyone. Impact The attacker can initialize the contract before the legitimate deployer, hoping that the victim continues to use the same contract. In the best...

Vader functions can be called before initialization in init() of Vader.sol

Handle 0xRajeev Vulnerability details Impact All the external/public functions of Vader.sol can be called by other contracts even before Vader.sol contract is initialized. This can lead to exceptions, state corruption or incorrect accounting in other contracts, which may require redeployment of...

Initialization can be front-run in DAO.sol

Handle 0xRajeev Vulnerability details Impact Given the public access, this is susceptible to front-running by an attacker who can initialize this with arbitrary assets before the deployer. Reinitialization will require contract redeployment because initialization can be done only once. Reference:...

Initialization can be front-run in USDV.sol

Handle 0xRajeev Vulnerability details Impact Given the public access, this is susceptible to front-running by an attacker who can initialize this with arbitrary assets before the deployer. Reinitialization will require contract redeployment because initialization can be done only once. Reference:...

USDV functions can be called before initialization in init() of USDV.sol

Handle 0xRajeev Vulnerability details Impact All the external/public functions of USDV.sol can be called by other contracts even before USDV.sol contract is initialized. This can lead to exceptions, state corruption or incorrect accounting in other contracts, which may require redeployment of...

DAO functions can be called before initialization in init() of DAO.sol

Handle 0xRajeev Vulnerability details Impact All the external/public functions of DAO.sol can be called by other contracts even before DAO.sol contract is initialized. This can lead to exceptions, state corruption or incorrect accounting in other contracts, which may require redeployment of...

Security Bulletin: Multiple IBM DB2 Server Vulnerabilities Affect IBM Emptoris Contract Management

Summary Multiple IBM DB2 Server Vulnerabilities Affect IBM Emptoris Contract Management Vulnerability Details CVEID: CVE-2020-5025 DESCRIPTION: IBM DB2 for Linux, UNIX and Windows includes DB2 Connect Server 9.7, 10.1, 10.5, 11.1, and 11.5 db2fm is vulnerable to a buffer overflow, caused by...

Security Bulletin: Multiple Oracle Database Server Security Vulnerabilities Affect IBM Emptoris Contract Management

Summary Multiple Oracle database server security vulnerabilities affect IBM Emptoris Contract Management. Vulnerability Details CVEID: CVE-2021-2045 DESCRIPTION: An unspecified vulnerability in Oracle Database Server related to the Text component could allow an authenticated attacker to cause a...

Several function have no entry check

Email address [email protected] Handle gpersoon Eth address gpersoon.eth Vulnerability details The following functions have no entry check or a trivial entry check: withdrawHourlyBond Lending.sol closeHourlyBondAccount Lending.sol haircut Lending.sol addDelegateown adress... Admin.sol...

Security Bulletin: Multiple IBM DB2 Server Vulnerabilities Affect IBM Emptoris Contract Management

Summary Multiple IBM DB2 server security vulnerabilities affect IBM Emptoris Contract Management. Vulnerability Details CVEID: CVE-2020-4701 DESCRIPTION: IBM DB2 for Linux, UNIX and Windows includes DB2 Connect Server 10.5, 11.1, and 11.5 is vulnerable to a buffer overflow, caused by improper...

How NOT to fail at PDF redaction

The heated spat between Europe and AstraZeneca over a contract has segued into an unexpected blunder that left many of us chuckling and surprised at the same time. Perhaps even feeling a bit awkward. Recently, the European Commission published a PDF version of the contract it had with AstraZeneca...