{"containers":{"cna":{"affected":[{"product":"evm","vendor":"rust-blockchain","versions":[{"status":"affected","version":"< 0.21.1"},{"status":"affected","version":"= 0.22.0"},{"status":"affected","version":"= 0.23.0"},{"status":"affected","version":"= 0.24.0"},{"status":"affected","version":"= 0.25.0"}]}],"descriptions":[{"lang":"en","value":"evm is a pure Rust implementation of Ethereum Virtual Machine. Prior to the patch, when executing specific EVM opcodes related to memory operations that use `evm_core::Memory::copy_large`, the `evm` crate can over-allocate memory when it is not needed, making it possible for an attacker to perform denial-of-service attack. The flaw was corrected in commit `19ade85`. Users should upgrade to `==0.21.1, ==0.23.1, ==0.24.1, ==0.25.1, >=0.26.1`. There are no workarounds. Please upgrade your `evm` crate version."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"{\"CWE-770\":\"Allocation of Resources Without Limits or Throttling\"}","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-05-12T17:15:11.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388"},{"tags":["x_refsource_MISC"],"url":"https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd"},{"tags":["x_refsource_MISC"],"url":"https://crates.io/crates/evm"}],"source":{"advisory":"GHSA-4jwq-572w-4388","discovery":"UNKNOWN"},"title":"Memory over-allocation in evm crate","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-29511","STATE":"PUBLIC","TITLE":"Memory over-allocation in evm crate"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"evm","version":{"version_data":[{"version_value":"< 0.21.1"},{"version_value":"= 0.22.0"},{"version_value":"= 0.23.0"},{"version_value":"= 0.24.0"},{"version_value":"= 0.25.0"}]}}]},"vendor_name":"rust-blockchain"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"evm is a pure Rust implementation of Ethereum Virtual Machine. 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