CVE-2024-51501— Refit 注入漏洞
一分钟漏洞结论
影响对象
reactiveui refit
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Refit是ReactiveUI开源的一个库。 Refit存在注入漏洞，该漏洞源于未检查标头值中的CRLF字符，从而容易受到服务器端请求伪造的攻击。
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一、 漏洞 CVE-2024-51501 基础信息
漏洞信息
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Vulnerability Title
CRLF injection in Refit's [Header], [HeaderCollection] and [Authorize] attributes
来源: CVE Program / CVE List V5
Vulnerability Description
Refit is an automatic type-safe REST library for .NET Core, Xamarin and .NET The various header-related Refit attributes (Header, HeaderCollection and Authorize) are vulnerable to CRLF injection. The way HTTP headers are added to a request is via the `HttpHeaders.TryAddWithoutValidation` method. This method does not check for CRLF characters in the header value. This means that any headers added to a refit request are vulnerable to CRLF-injection. In general, CRLF-injection into a HTTP header (when using HTTP/1.1) means that one can inject additional HTTP headers or smuggle whole HTTP requests. If an application using the Refit library passes a user-controllable value through to a header, then that application becomes vulnerable to CRLF-injection. This is not necessarily a security issue for a command line application like the one above, but if such code were present in a web application then it becomes vulnerable to request splitting (as shown in the PoC) and thus Server Side Request Forgery. Strictly speaking this is a potential vulnerability in applications using Refit and not in Refit itself. This issue has been addressed in release versions 7.2.22 and 8.0.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
来源: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
来源: CVE Program / CVE List V5
Vulnerability Title
Refit 注入漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Refit是ReactiveUI开源的一个库。 Refit存在注入漏洞，该漏洞源于未检查标头值中的CRLF字符，从而容易受到服务器端请求伪造的攻击。
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 |
|---|---|---|---|---|
| reactiveui | refit | < 7.2.22 | - |
|
二、漏洞 CVE-2024-51501 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-51501 补丁与修复 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2024-51501
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