CVE-2023-38698 .eth registrar controller can shorten the duration of registered names

Ethereum Name Service ENS is a distributed, open, and extensible naming system based on the Ethereum blockchain. According to the documentation, controllers are allowed to register new domains and extend the expiry of existing domains, but they cannot change the ownership or reduce the expiration...

Force Expiration Of Ethereum Name Service (ENS)

@ensdomains/ens-contracts is vulnerable to Force Expiration Of Ethereum Name Service ENS. The vulnerability exists due to the integer overflow in the renew function of BaseRegistrarImplementation.sol, which allows an attacker to reduce the expiration time of existing domains...

.eth registrar controller can shorten the duration of registered names

Description According to the documentation, controllers are allowed to register new domains and extend the expiry of existing domains, but they cannot change the ownership or reduce the expiration time of existing domains. However, a preliminary analysis suggests that an attacker-controlled...

Incorrect implementation of RRUtils.serialNumberGte

Lines of code Vulnerability details Impact Comparing serial numbers should follow RFC1982 due to the possibility of numbers wrapping around. RRUtils.serialNumberGte tried to follow the RFC but failed to do so, leading to incorrect results in comparison. Proof of Concept For a serial number i1 to ...

HexUtils.hexStringToBytes32() and HexUtils.hexToAddress() may return incorrect results

Lines of code Vulnerability details Impact The HexUtils.hexStringToBytes32 and HexUtils.hexToAddress may return incorrect results if the input data provided is not in a standard format. This could cause the contract to behave abnormally in some scenarios or be exploited for malicious purposes...

Fully qualified domain names are incorrectly resolved

Lines of code Vulnerability details Impact A relative domain name like foo.eth becomes fully qualified if it ends with a dot, e.g. foo.eth., although this might seem unfamiliar to some, it's the standard and part of the DNS specification, see Fully qualified domain name, Trailing Dots in Domain...

HexUtils.hexStringToBytes32 does not exclude the last index in str

Lines of code Vulnerability details Impact The HexUtils.hexStringToBytes32 intends to exclude the lastIdx index in the input str. See the @param comment for lastIdx parameter: / @dev Attempts to parse bytes32 from a hex string @param str The string to parse @param idx The offset to start parsing ...

Invalid addresses will be accepted as resolvers, possibly bricking assets

Lines of code Vulnerability details Description The hexToAddress utility parses a string into an address type. function hexToAddress bytes memory str, uint256 idx, uint256 lastIdx internal pure returns address, bool if lastIdx - idx 40 return address0x0, false; bytes32 r, bool valid =...

Anyone can call enableNode and set a node resolver

Lines of code Vulnerability details Impact The lack of access control allows anyone to call the enableNode function and set the ENS resolver to the resolver set in DNSRegistrar if it has not been set before, or it belongs to the previous registrar set on the contract. This results in any unset no...

OffchainDNSResolver Contract Missing onlyOwner Modifier in Constructor Can Lead to DNS Hijacking Attacks

Lines of code Vulnerability details Impact The OffchainDNSResolver contract has a security vulnerability where it doesn't have a safeguard called the onlyOwner modifier in its constructor, this means that anyone can deploy the contract. This could allow a bad actor to create a version of the...

Claiming of domains will likely be locked due to a bad check in _enableNode

Lines of code Vulnerability details Description DNS name claims all go through claim which calls enableNode, which calls enableNode. Nodes are enabled recursively, from the root downwards.The following check occurs in enableNode: node = keccak256abi.encodePackedparentNode, label; address owner =...

If a label for a domain gets locked once, the domain will never be able to be claimed in DNSRegistrar.sol, since there's no method to unlock a label

Lines of code Vulnerability details Proof of Concept When claiming a domain in DNSRegistrar.sol either through proveAndClaim or proveAndClaimWithResolver, the internal function enableNode will be called. The snippet bellow shows that when owner == address0 or owner == previousRegistrar and...

Prevent users from creating plugin repository proxy

Lines of code Vulnerability details Impact The attacker can Front-running the transaction and prevent users from creating plugin repository proxy. Proof of Concept The PluginRepoFactory.createPluginRepo is used to create a plugin repository proxy pointing to the pluginRepoBase implementation and...

Front-running to register subdomain

Lines of code Vulnerability details Impact An attacker can Front-running createDao to register the subdomain and revert the user's transaction. Proof of Concept The createDao function is used to creates a new DAO, registers it on the DAO registry, and installs a list of plugins via the plugin set...

Security Bulletin: Unspecified vulnerability in Java Affects IBM Infosphere Global Name Management (CVE-2022-21496)

Summary The Java used in IBM Global Name Management has an unspecified vulnerability related to the JNDI component. Within GNM, this issue only affects ENS, a part of GNM 6 installed by a small minority of GNM customers. For GNM customers not using ENS, there is no vulnerability. Vulnerability...

Security Bulletin: Vulnerabilities in IBM WebSphere Liberty affects IBM InfoSphere Global Name Management (CVE-2022-22475, CVE-2022-22476)

Summary The IBM WebSphere Liberty used in IBM InfoSphere Global Name Management is vulnerable to identity spoofing by an authenticated user. This issue only affects ENS, a part of GNM 6 installed by a small minority of GNM customers. For GNM customers not using ENS, there is no vulnerability...

The patch is not sufficient: there is another insidious exploit that can cause the same critical consequences

Lines of code Vulnerability details Status Has been reported to and confirmed by Jeff ENS team Note to the Judge I am not sure whether I should label this as a newly-identified High or a mitigation hard error. The root cause of this issue seems as same as the original report, but this requires us...

[ZZ-001] PARENT_CANNOT_CONTROL and CANNOT_CREATE_SUBDOMAIN fuses can be bypassed

Severity: High Status: Has been reported to and comfirmed by Jeff ENS team Report Time: 11/28/2022 12:31 AM EST Description The fuse constraints can be violated by a malicious owner of the parent node i.e., the hacker. There are two specific consequences the hacker can cause. Suppose the subnode...

Upgraded Q -> M from 143 [1663859521800]

Judge has assessed an item in Issue 143 as Medium risk. The relevant finding follows: 2.ETHRegistrarController.register can pass any "resolver" and "data" parameters , then ETHRegistrarController do "functionCall " It is possible to pass malicious parameters example : resolver =...

Contracts calls to main ENS services will fail. Plus, ETHRegistrarController#withdraw() with future upgrades will revert

Lines of code Vulnerability details This is a classic Code4rena issue. The transfer call has a hard coded gas budget whenever this affect another part of the EVM will be very harmful for those usage which will make the system and its users at risk. There is two parts of this issue; when the calle...