CVE-2021-41136

一、漏洞信息
 漏洞编号：[CVE-2021-41136](https://nvd.nist.gov/vuln/detail/CVE-2021-41136)
 漏洞归属组件：[rubygem-puma](https://gitee.com/src-openeuler/rubygem-puma)
 漏洞归属的版本：3.12.6,4.3.9
 CVSS V3.0分值：
  BaseScore：3.7 Low
  Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
 漏洞简述：
  Puma is a HTTP 1.1 server for Ruby/Rack applications. Prior to versions 5.5.1 and 4.3.9, using `puma` with a proxy which forwards HTTP header values which contain the LF character could allow HTTP request smugggling. A client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. The only proxy which has this behavior, as far as the Puma team is aware of, is Apache Traffic Server. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This vulnerability was patched in Puma 5.5.1 and 4.3.9. As a workaround, do not use Apache Traffic Server with `puma`.
 漏洞公开时间：2021-10-13 00:15
 漏洞创建时间：2021-10-20 13:16:07
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-41136
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| CONFIRM | https://github.com/puma/puma/security/advisories/GHSA-48w2-rm65-62xx |  |
| MISC | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  |
| DEBIAN | https://www.debian.org/security/2022/dsa-5146 |  |
| redhat | https://access.redhat.com/security/cve/CVE-2021-41136 |  |
| suse_bugzilla | https://github.com/puma/puma/security/advisories/GHSA-48w2-rm65-62xx |  |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2013495 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-41136 |  |
| suse_bugzilla | https://github.com/puma/puma/security/advisories/GHSA-48w2-rm65-62xx |  |
| suse_bugzilla | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41136 |  |
| ubuntu | https://github.com/puma/puma/security/advisories/GHSA-48w2-rm65-62xx |  |
| ubuntu | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-41136 |  |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-41136 |  |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-41136 |  |
| debian | https://security-tracker.debian.org/tracker/CVE-2021-41136 |  |
| ruby | https://github.com/rubysec/ruby-advisory-db/gems/puma/CVE-2021-41136.yml |  |

</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:
  openBrain开源漏洞感知系统
 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  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  | MISC |
|  |  | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  | suse_bugzilla |
|  |  | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  | ubuntu |
|  |  | https://github.com/puma/puma/commit/acdc3ae571dfae0e045cf09a295280127db65c7f |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
      Puma is a HTTP 1.1 server for Ruby/Rack applications. Prior to versions 5.5.1 and 4.3.9, using puma with a proxy which forwards HTTP header values which contain the LF character could allow HTTP request smugggling. A client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. The only proxy which has this behavior, as far as the Puma team is aware of, is Apache Traffic Server. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request s body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This vulnerability was patched in Puma 5.5.1 and 4.3.9. As a workaround, do not use Apache Traffic Server with puma.  
 openEuler评分：
  3.7
 Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(3.12.6):受影响
2.openEuler-20.03-LTS-SP3(3.12.6):受影响
3.openEuler-20.03-LTS-SP4:受影响
4.openEuler-22.03-LTS(3.12.6):受影响
5.openEuler-22.03-LTS-SP1(5.5.2):不受影响
6.openEuler-22.03-LTS-SP2(5.5.2):不受影响
7.openEuler-22.03-LTS-SP3:不受影响
8.openEuler-22.03-LTS-Next(3.12.6):不受影响
9.master(4.3.9):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(3.12.6):否
2.openEuler-20.03-LTS-SP3(3.12.6):否
3.openEuler-20.03-LTS-SP4:否
4.openEuler-22.03-LTS(3.12.6):否
5.openEuler-22.03-LTS-SP1(5.5.2):否
6.openEuler-22.03-LTS-SP2(5.5.2):否
7.openEuler-22.03-LTS-SP3:否
8.openEuler-22.03-LTS-Next(3.12.6):否
9.master(4.3.9):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1006

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