CVE-2021-30047

一、漏洞信息
 漏洞编号：[CVE-2021-30047](https://nvd.nist.gov/vuln/detail/CVE-2021-30047)
 漏洞归属组件：[vsftpd](https://gitee.com/src-openeuler/vsftpd)
 漏洞归属的版本：3.0.3,3.0.5
 CVSS V3.0分值：
  BaseScore：7.5 High
  Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed.
 漏洞公开时间：2023-08-23 03:16:20
 漏洞创建时间：2023-08-22 19:57:58
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-30047
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| cve.mitre.org | https://www.exploit-db.com/exploits/49719 |  |
| redhat_bugzilla | https://www.exploit-db.com/exploits/49719 | https://bugzilla.redhat.com/show_bug.cgi?id=2235683 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2021-30047 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2021-30047 |
| cve_search |  | https://www.exploit-db.com/exploits/49719 |
| snyk | https://www.exploit-db.com/exploits/49719 | https://security.snyk.io/vuln/SNYK-UNMANAGED-VSFTPD-5871300 |

</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://www.exploit-db.com/exploits/49719 |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
    VSFTPD 3.0.3 allows attackers to cause a denial of service due to limited number of connections allowed. 
 openEuler评分：
  7.5
 Vector：CVSS：3.0/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.openEuler-20.03-LTS-SP4(3.0.3):受影响
2.openEuler-22.03-LTS-SP1(3.0.3):受影响
3.openEuler-22.03-LTS-SP3(3.0.3):受影响
4.openEuler-22.03-LTS-SP4(3.0.3):受影响
5.master(3.0.5):不受影响
6.openEuler-24.03-LTS(3.0.5):不受影响
7.openEuler-24.03-LTS-Next(3.0.5):不受影响
8.openEuler-24.03-LTS-SP2(3.0.5):

修复是否涉及abi变化(是/否)：
  1.master(3.0.5):否
2.openEuler-20.03-LTS-SP4(3.0.3):否
3.openEuler-22.03-LTS-SP1(3.0.3):否
4.openEuler-22.03-LTS-SP3(3.0.3):否
5.openEuler-22.03-LTS-SP4(3.0.3):否
6.openEuler-24.03-LTS(3.0.5):否
7.openEuler-24.03-LTS-Next(3.0.5):否
8.openEuler-24.03-LTS-SP2(3.0.5):

原因说明：
  1.master(3.0.5):
2.openEuler-20.03-LTS-SP4(3.0.3):
3.openEuler-22.03-LTS-SP3(3.0.3):
4.openEuler-22.03-LTS-SP4(3.0.3):
5.openEuler-24.03-LTS(3.0.5):
6.openEuler-24.03-LTS-Next(3.0.5):
7.openEuler-24.03-LTS-SP1(3.0.5):
8.openEuler-24.03-LTS-SP2(3.0.5):

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