漏洞信息
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Vulnerability Title
joserfc: b64=false RFC7797 JWS payloads bypass JWSRegistry payload-size limits during deserialization
Vulnerability Description
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.max_payload_length, which can lead to resource exhaustion. The normal JWS compact and flattened JSON paths reject payloads above the configured payload-size limit with ExceededSizeError. The RFC7797 unencoded payload paths do not make the same check. A valid b64=false compact or flattened JSON JWS can therefore deserialize successfully with a payload larger than JWSRegistry.max_payload_length. Applications that accept lower-trust JWS values and rely on joserfc to reject oversized token content during verification have a moderate availability risk. This issue has been fixed in version 1.6.7.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Authlib joserfc 资源管理错误漏洞
Vulnerability Description
Authlib joserfc是Authlib组织开源的一个 Python 库,全面实现了 JOSE(JSON Object Signing and Encryption)系列标准,包括 JWS、JWE、JWK、JWT 等 RFC 规范,用于安全地处理 JSON 数据的签名与加密。 Authlib joserfc 1.3.4版本至1.6.5版本存在安全漏洞,该漏洞源于未对RFC7797 b64=false JWS有效载荷应用JWSRegistry.max_payload_length限制,可能导致资源耗尽
CVSS Information
N/A
Vulnerability Type
N/A