{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2023-26556", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-08-02T11:53:54.326Z", "dateReserved": "2023-02-26T00:00:00", "datePublished": "2023-04-21T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-04-21T00:00:00"}, "descriptions": [{"lang": "en", "value": "io.finnet tss-lib before 2.0.0 can leak a secret key via a timing side-channel attack because it relies on the scalar-multiplication implementation in Go crypto/elliptic, which is not constant time (there is an if statement in a loop). One leak is in ecdsa/keygen/round_2.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)"}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0"}, {"url": "https://github.com/bnb-chain/tss-lib/tree/v1.3.5"}, {"url": "https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3"}, {"url": "https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T11:53:54.326Z"}, "title": "CVE Program Container", "references": [{"url": "https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0", "tags": ["x_transferred"]}, {"url": "https://github.com/bnb-chain/tss-lib/tree/v1.3.5", "tags": ["x_transferred"]}, {"url": "https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3", "tags": ["x_transferred"]}, {"url": "https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b", "tags": ["x_transferred"]}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:iofinnet:tss-lib:*:*:*:*:*:*:*:*", "matchCriteriaId": "5A407DB0-D561-404E-941A-EF988ABB8BDB", "versionEndExcluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "io.finnet tss-lib before 2.0.0 can leak a secret key via a timing side-channel attack because it relies on the scalar-multiplication implementation in Go crypto/elliptic, which is not constant time (there is an if statement in a loop). One leak is in ecdsa/keygen/round_2.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)"}], "id": "CVE-2023-26556", "lastModified": "2023-11-07T04:09:38.963", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-04-21T18:15:07.927", "references": [{"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://github.com/bnb-chain/tss-lib/tree/v1.3.5"}, {"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3"}, {"source": "cve@mitre.org", "url": "https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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