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CVE-2025-66564

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.0.3, Function api.ParseJSONRequest currently splits (via a call to strings.Split) an optionally-provided OID (which is untrusted data) on periods. Similarly, function api.getContentType splits the Content-Type header (which is also untrusted data) on an application string. As a result, in the face of a malicious request with either an excessively long OID in the payload containing many period characters or a ma
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:00d66ba3c5aa919faa3fd83f1dfca139757a419080b5d8027105f23a06414b2b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"timestamp-authority","vendor":"sigstore","versions":[{"status":"affected","version":"< 2.0.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a119e740026ec246f4da48bfcccdc03defe47da5708d9555a73bc2033feb77c1 · sha256:be768c5bd15d7e7e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a119e740026ec246f4da48bfcccdc03defe47da5708d9555a73bc2033feb77c1 · sha256:be768c5bd15d7e7e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-405","description":"CWE-405: Asymmetric Resource Consumption (Amplification)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a119e740026ec246f4da48bfcccdc03defe47da5708d9555a73bc2033feb77c1 · sha256:be768c5bd15d7e7e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/sigstore/timestamp-authority/commit/0cae34e197d685a14904e0bad135b89d13b69421","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/timestamp-authority/commit/0cae34e197d685a14904e0bad135b89d13b69421"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a119e740026ec246f4da48bfcccdc03defe47da5708d9555a73bc2033feb77c1 · sha256:be768c5bd15d7e7e… · /containers/cna/references/1
{"name":"https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-4qg8-fj49-pxjh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-4qg8-fj49-pxjh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a119e740026ec246f4da48bfcccdc03defe47da5708d9555a73bc2033feb77c1 · sha256:be768c5bd15d7e7e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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