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一、 漏洞 CVE-2025-27817 基础信息
漏洞信息
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Vulnerability Title
Apache Kafka Client: Arbitrary file read and SSRF vulnerability
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
A possible arbitrary file read and SSRF vulnerability has been identified in Apache Kafka Client. Apache Kafka Clients accept configuration data for setting the SASL/OAUTHBEARER connection with the brokers, including "sasl.oauthbearer.token.endpoint.url" and "sasl.oauthbearer.jwks.endpoint.url". Apache Kafka allows clients to read an arbitrary file and return the content in the error log, or sending requests to an unintended location. In applications where Apache Kafka Clients configurations can be specified by an untrusted party, attackers may use the "sasl.oauthbearer.token.endpoint.url" and "sasl.oauthbearer.jwks.endpoint.url" configuratin to read arbitrary contents of the disk and environment variables or make requests to an unintended location. In particular, this flaw may be used in Apache Kafka Connect to escalate from REST API access to filesystem/environment/URL access, which may be undesirable in certain environments, including SaaS products. Since Apache Kafka 3.9.1/4.0.0, we have added a system property ("-Dorg.apache.kafka.sasl.oauthbearer.allowed.urls") to set the allowed urls in SASL JAAS configuration. In 3.9.1, it accepts all urls by default for backward compatibility. However in 4.0.0 and newer, the default value is empty list and users have to set the allowed urls explicitly.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Apache Kafka Client 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Apache Kafka Client是美国阿帕奇（Apache）基金会的一款Kafka客户端。 Apache Kafka Client存在安全漏洞，该漏洞源于配置数据验证不足，可能导致任意文件读取和服务端请求伪造。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
厂商产品影响版本CPE订阅
Apache Software FoundationApache Kafka Client 3.1.0 ~ 3.9.0 -
二、漏洞 CVE-2025-27817 的公开POC
#POC 描述源链接神龙链接
1Nonehttps://github.com/Threekiii/Awesome-POC/blob/master/%E4%B8%AD%E9%97%B4%E4%BB%B6%E6%BC%8F%E6%B4%9E/Apache%20Kafka%20Clients%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E4%B8%8ESSRF%20%E6%BC%8F%E6%B4%9E%20CVE-2025-27817.mdPOC详情
2CVE-2025-27817https://github.com/kk12-30/CVE-2025-27817POC详情
3Apache Kafka客户端未对用户输入进行严格验证和限制，未经身份验证的攻击者可通过构造恶意配置读取环境变量或磁盘任意内容，或向非预期位置发送请求，提升REST API的文件系统/环境/URL访问权限。https://github.com/iSee857/CVE-2025-27817POC详情
4Apache Kafka 4.1.0 (KRaft) with Keycloak OAuth2 authentication using Strimzi - bypasses CVE-2025-27817 URL allowlist restrictionhttps://github.com/oriolrius/kafka-keycloak-oauthPOC详情
5Apache Kafka Client contains arbitrary file read and server-side request forgery caused by untrusted configuration of sasl.oauthbearer.token.endpoint.url and sasl.oauthbearer.jwks.endpoint.url, letting attackers read files or send requests to unintended locations, exploit requires untrusted party to specify client configurations. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-27817.yamlPOC详情
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三、漏洞 CVE-2025-27817 的情报信息
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四、漏洞 CVE-2025-27817 的评论

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