CVE-2025-66564 - Sigstore Timestamp Authority allocates excessive memory during request parsing

CVE-2025-66564 - Sigstore Timestamp Authority allocates excessive memory during request parsing

https://cvefeed.io/rssfeed/latest.atom / Fri, 12/05/2025 - 01:51
CVE ID : CVE-2025-66564
Published : Dec. 4, 2025, 11:15 p.m. | 58 minutes ago
Description : 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 malformed Content-Type header, a call to api.ParseJSONRequest or api.getContentType incurs allocations of O(n) bytes (where n stands for the length of the function's argument). This vulnerability is fixed in 2.0.3.
Severity: 7.5 | HIGH
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