{ "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2022-35929", "STATE": "PUBLIC", "TITLE": "False positive signature verification in cosign" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "cosign", "version": { "version_data": [ { "version_value": "< 1.10.1" } ] } } ] }, "vendor_name": "sigstore" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to \"custom\"). This can happen when signing with a standard keypair and with \"keyless\" signing with Fulcio. This vulnerability can be reproduced with the `distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2` image. This image has a `vuln` attestation but not an `spdx` attestation. However, if you run `cosign verify-attestation --type=spdx` on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-347: Improper Verification of Cryptographic Signature" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296", "refsource": "CONFIRM", "url": "https://github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296" }, { "name": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94", "refsource": "MISC", "url": "https://github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94" } ] }, "source": { "advisory": "GHSA-vjxv-45g9-9296", "discovery": "UNKNOWN" } }