CVE-2025-61921

一、漏洞信息
 漏洞编号：[CVE-2025-61921](https://nvd.nist.gov/vuln/detail/CVE-2025-61921)
 漏洞归属组件：[rubygem-sinatra](https://gitee.com/src-openeuler/rubygem-sinatra)
 漏洞归属的版本：2.0.3,2.0.8.1
 CVSS V3.x分值：
  BaseScore：7.5 High
  Vector：CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, there is a denial of service vulnerability in the If-Match and If-None-Match header parsing component of Sinatra, if the etag method is used when constructing the response. Carefully crafted input can cause If-Match and If-None-Match header parsing in Sinatra to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is typically involved in generating the ETag header value. Any applications that use the etag method when generating a response are impacted. Version 4.2.0 fixes the issue.
 漏洞公开时间：2025-10-11 04:15:38
 漏洞创建时间：2025-10-11 03:41:46
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-61921
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://github.com/advisories/GHSA-mr3q-g2mv-mr4q |  |
|  | https://github.com/sinatra/sinatra |  |
|  | https://security-tracker.debian.org/tracker/CVE-2025-61921 |  |
|  | https://github.com/sinatra/sinatra/pull/1823 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2403178 |  |
|  | https://github.com/sinatra/sinatra/commit/3fe8c38dc405586f7ad8f2ac748aa53e9c3615bd |  |
|  | https://www.mend.io/vulnerability-database/CVE-2025-61921 |  |
|  | https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sinatra/CVE-2025-61921.yml |  |
|  | https://bugs.ruby-lang.org/issues/19104 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-61921 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-61921 |  |
|  | https://github.com/sinatra/sinatra/issues/2120 |  |
|  | https://github.com/sinatra/sinatra/pull/2121 |  |
|  | https://github.com/sinatra/sinatra/security/advisories/GHSA-mr3q-g2mv-mr4q |  |
|  | https://github.com/sinatra/sinatra/commit/8ff496bd4877520599e1479d6efead39304edceb |  |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  七彩瞬析开源风险感知平台
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| sinatra/sinatra |  | https://github.com/sinatra/sinatra/commit/3fe8c38dc405586f7ad8f2ac748aa53e9c3615bd.patch |  | ljqc |
| sinatra/sinatra |  | https://github.com/sinatra/sinatra/commit/8ff496bd4877520599e1479d6efead39304edceb.patch |  | ljqc |
|  |  | https://github.com/sinatra/sinatra/pull/1823 |  | cvelistv5 |
|  |  | https://github.com/sinatra/sinatra/commit/3fe8c38dc405586f7ad8f2ac748aa53e9c3615bd |  | github_advisory |
|  |  | https://github.com/sinatra/sinatra/pull/2121 |  | cvelistv5 |
|  |  | https://github.com/sinatra/sinatra/commit/8ff496bd4877520599e1479d6efead39304edceb |  | github_advisory |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
                                         
 openEuler评分：
  7.5
 Vector：CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.master:
2.openEuler-20.03-LTS-SP4(2.0.3):
3.openEuler-22.03-LTS-SP3(2.0.8.1):
4.openEuler-22.03-LTS-SP4(2.0.8.1):
5.openEuler-24.03-LTS(2.0.8.1):
6.openEuler-24.03-LTS-Next(2.0.8.1):
7.openEuler-24.03-LTS-SP1(2.0.8.1):
8.openEuler-24.03-LTS-SP2(2.0.8.1):

修复是否涉及abi变化(是/否)：
  1.master:
2.openEuler-20.03-LTS-SP4(2.0.3):
3.openEuler-22.03-LTS-SP3(2.0.8.1):
4.openEuler-22.03-LTS-SP4(2.0.8.1):
5.openEuler-24.03-LTS(2.0.8.1):
6.openEuler-24.03-LTS-Next(2.0.8.1):
7.openEuler-24.03-LTS-SP1(2.0.8.1):
8.openEuler-24.03-LTS-SP2(2.0.8.1):

原因说明：
  1.master:
2.openEuler-20.03-LTS-SP4(2.0.3):
3.openEuler-22.03-LTS-SP3(2.0.8.1):
4.openEuler-22.03-LTS-SP4(2.0.8.1):
5.openEuler-24.03-LTS(2.0.8.1):
6.openEuler-24.03-LTS-Next(2.0.8.1):
7.openEuler-24.03-LTS-SP1(2.0.8.1):
8.openEuler-24.03-LTS-SP2(2.0.8.1):

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