{"answers":{"affected":"3 open source packages ship an affected version, including github.com/cosmos/ethermint. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-25835 in the wild and no public exploit code.","fix":"Upgrade github.com/cosmos/ethermint to 0.4.1 or later.","what":"CVE-2021-25835 is a high-severity vulnerability in n/a, published on 8 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25835 and fix it if it is affected.\n\nWhat it is: CVE-2021-25835 is a high-severity vulnerability in n/a, published on 8 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25835 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/cosmos/ethermint (Go): affected all versions; fixed in 0.4.1\n- github.com/cosmos/ethermint (Go): affected all versions; fixed in 0.4.1\n- github.com/cosmos/ethermint (Go): affected all versions; fixed in 0.4.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-25835/ (Markdown: https://insights.sbomify.com/CVE-2021-25835/index.md)","id":"CVE-2021-25835","markdown":"https://insights.sbomify.com/CVE-2021-25835/index.md","name":"CVE-2021-25835","record":{"aliases":["GHSA-x5f3-qmwj-4f84","GO-2022-0889"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Cosmos Ethermint library","requires_auth":"none","summary":"Attackers can replay valid Ethereum transactions on Ethermint due to shared chain ID and signature schemes, enabling unauthorized cross-chain transaction execution.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ethermint","vendor":"chainsafe"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-294","name":"Authentication Bypass by Capture-replay"}],"description":"Cosmos Network Ethermint \u003c= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables \"cross-chain transaction replay\" attack.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Authentication bypass by capture-replay in github.com/cosmos/ethermint","id":"CVE-2021-25835","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"other","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"Business logic in n/a","id":"CVE-2021-25836"},"packages":[{"ecosystem":"Go","fixed":["0.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/cosmos/ethermint","purl":null,"source":"GHSA-x5f3-qmwj-4f84"},{"ecosystem":"Go","fixed":["0.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/cosmos/ethermint","purl":"pkg:golang/github.com/cosmos/ethermint","source":"GHSA-x5f3-qmwj-4f84"},{"ecosystem":"Go","fixed":["0.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/cosmos/ethermint","purl":"pkg:golang/github.com/cosmos/ethermint","source":"GO-2022-0889"}],"prev":{"headline":"Authentication bypass by capture-replay in github.com/cosmos/ethermint","id":"CVE-2021-25834"},"products":["n/a"],"published":"2021-02-08","related":[{"cvss_score":7.5,"headline":"Authentication bypass by capture-replay in github.com/cosmos/ethermint","id":"CVE-2021-25834","kev_date_added":null,"published":"2021-02-08"},{"cvss_score":7.5,"headline":"Business logic in n/a","id":"CVE-2021-25836","kev_date_added":null,"published":"2021-02-08"},{"cvss_score":7.5,"headline":"Business logic in n/a","id":"CVE-2021-25837","kev_date_added":null,"published":"2021-02-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can replay valid Ethereum transactions on Ethermint due to shared chain ID and signature schemes, enabling unauthorized cross-chain transaction execution.","url":"https://insights.sbomify.com/CVE-2021-25835/"}