DDoS Attempts Hit Russia as Ukraine Conflict Intensifies

Plus: Hacker recruits, NFT thefts, and more of the week’s top security news...

NFT owner can change tokenURI

Lines of code Vulnerability details Impact In the ERC721OnChain implementation the token owner can set the token's URI using setTokenURI. Usually, this is token URI points to data defining the NFT attributes, images, etc.. It's usually set by the contract owner. A user that owns an NFT can just...

Phishing scam: NFTs Worth $1.7M Stolen from OpenSea Users

By Deeba Ahmed OpenSeas CEO Devin Finzer has denied the claims that a vulnerability in their smart contract was exploited to… This is a post from HackRead.com Read the original post: Phishing scam: NFTs Worth $1.7M Stolen from OpenSea Users...

missing whenNotPaused

Lines of code Vulnerability details All the external function of LensHub have whenNotPasued modifier. However, LensHub is erc721 and the transfer function doesn't have the whenNotPaused modifier. Impact In case where the governance wants to stop all activity, they still can't stop transferring...

Reentrancy allows commenter to overwrite own comments

Lines of code Vulnerability details Since the Lens platform is a blockchain-based social media platform, it's important that information relevant to users be emitted so that light clients need not continually refer to the blockchain, which can be expensive. From the docs: Events are emitted at...

Approvals not cleared when transferring profile

Lines of code Vulnerability details Impact The ApprovalFollowModule.approve function is indexed by both owner = IERC721HUB.ownerOfprofileId, profileId in case the profileId NFT is transferred. However, upon transfer, the old approvals are not cleared. This can lead to similar issues as OpenSea no...

Destroy can avoid the bulk of fees

Lines of code Vulnerability details Impact A user can destroy their NFTs and not pay fees on most of their assets. Proof of concept Alice has an NFT portfolio with 100 gwei dai and 100 gwei uni. Alice calls destroy on this NFT with buy token marked as dai. We would expect after this destroy step...

A week in security (January 31 – February 6)

Last week on Malwarebytes Labs: Threat actor steals email with Zimbra zero-day FBI warns of bogus job postings on recruitment sites Investment scams are on the rise A worrying Etsy listing reveals the stalking potential of Apple’s AirTags Beware bogus OperaGX sponsorship offers $320 milllion stol...

Actor’s verified Twitter profile hijacked to spam NFT giveaways

When we refer to hijacked verified profiles on Twitter, it’s most commonly some sort of Elon Musk themed scam. The hijackers compromise the account, switch the picture to Elon, and then start spamming cryptocurrency links. Alternatively, they may keep the account as it is and spam images claiming...

addressShare is not updated on arbRestake

Handle hack3r-0m Vulnerability details when intialStake is called, it mints the nft, and on before transfer hook, addressSharesmsg.sender is credited with minted shares when redeemNFT is called, it burns the nft, and on before transfer hook, addressSharesmsg.sender is subtracted with burned share...

Sherlock: arbRestake() doesnt reduce addressShares of owner

Handle GreyArt Vulnerability details Impact As per the documentation, “After 2 weeks without action on an unlocked position arbs can come in to arbRestakeid, 20% of the underlying USDC amount principal + yield is at risk for the owner of the position.” While shares are redeemed for the arbitrager...

Ozzy Osbourne NFTs Used to Bite Off Chunk of Crypto Coin

Ozzy Osbourne and his famously enterprising wife and manager, Sharon, decided to launch a new non-fungible token NFT collection called CryptoBatz — but the rollout was clouded. Scammers quickly found they could use an abandoned vanity Discord URL to drain potential buyers’ crypto wallets...

Discord scammers go CryptoBatz phishing

It’s not been a great couple of weeks for people looking to get in on NFTs. Missing apes, rug-pulls, it’s all go in non-fungible token land. The latest mishap has come to light, in the shape of bad planning and the slowly shifting impermanence of link ownership. Rockstar Ozzy Osbourne announced...

tokenBalanceOfAddress of nftOwner becomes permanently incorrect after arbRestake

Handle hyh Vulnerability details Impact Sucessfull arbRestake performs redeemShares for arbRewardShares amount to extract the arbitrager reward. This effectively reduces shares accounted for an NFT, but leaves untouched the addressShares of an nftOwner. As a result the tokenBalanceOfAddress...

DEBIAN-CVE-2021-46283

nftablesnewset in net/netfilter/nftablesapi.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service NULL pointer dereference and general protection fault because of the missing initialization for nftsetelemexpralloc. A local user can set a netfilter table expression i...

Both _mint and _safeMint are used to mint NFTs

Handle palina Vulnerability details Impact Both mint and safeMint functions are used to mint ERC721 NFTs in Claimers and Depositors, respectively. The usage of the mint is, however, discouraged by the used ERC721 implementation see PoC section, in favor of its safe counterpart. Proof of Concept...

When a user performs a withdrawal operation, a rollback that is not considered by the program may be triggered.

Handle ACai Vulnerability details Impact When the Vault contract deposits all/most of the token into the strategy contract, so that the remaining tokens in the Vault contract are less than the user's deposit, the user's withdrawal operation will result in a rollback that is not considered by the...

Norton Put a Cryptominer in Its Antivirus Software

Plus: NFT thefts, a ransomware wave in schools, and more of the week’s top security news...

Re-entracy leading to increasing points in undesired way

Handle hack3r-0m Vulnerability details Current state: the attacker has a few nfts minted already by locking position call lock function with very high duration and very high amount from a contract attacker has control of this contract It will pass the non-re-entrant check and call lock function...

merge() can cause lock to fail due to tokenId collision

Handle WatchPug Vulnerability details function generateNewTokenIduint256 points internal view returns uint256 tokenId // Points is capped at 128 bits max supply of XDEFI for 10 years locked, total supply of NFTs is capped at 128 bits. return points PoC 1. Alice lock 1 XDEFI for 7 days 3 times got...