CVE-2021-41773

一、漏洞信息
 漏洞编号：[CVE-2021-41773](https://nvd.nist.gov/vuln/detail/CVE-2021-41773)
 漏洞归属组件：[httpd](https://gitee.com/src-openeuler/httpd)
 漏洞归属的版本：2.4.43,2.4.46
 CVSS V3.0分值：
  BaseScore：7.5 High
  Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
 漏洞简述：
  A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration  require all denied , these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
 漏洞公开时间：2021-10-05 17:15:07
 漏洞创建时间：2025-06-27 02:10:11
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-41773
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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>

无
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二、漏洞分析结构反馈
 影响性分析说明：
  A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration require all denied , these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
 openEuler评分：
  7.5
 Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
 受影响版本排查(受影响/不受影响)：
  1.master(2.4.58):不受影响
2.openEuler-20.03-LTS-SP4(2.4.43):不受影响
3.openEuler-22.03-LTS-SP3(2.4.51):不受影响
4.openEuler-22.03-LTS-SP4(2.4.51):不受影响
5.openEuler-24.03-LTS(2.4.58):不受影响
6.openEuler-24.03-LTS-Next(2.4.58):不受影响
7.openEuler-24.03-LTS-SP1(2.4.58):不受影响
8.openEuler-24.03-LTS-SP2(2.4.58):不受影响

修复是否涉及abi变化(是/否)：
  1.master(2.4.58):否
2.openEuler-20.03-LTS-SP4(2.4.43):否
3.openEuler-22.03-LTS-SP3(2.4.51):否
4.openEuler-22.03-LTS-SP4(2.4.51):否
5.openEuler-24.03-LTS(2.4.58):否
6.openEuler-24.03-LTS-Next(2.4.58):否
7.openEuler-24.03-LTS-SP1(2.4.58):否
8.openEuler-24.03-LTS-SP2(2.4.58):否

原因说明：
  1.master(2.4.58):不受影响-漏洞代码不存在
2.openEuler-20.03-LTS-SP4(2.4.43):不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP3(2.4.51):不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP4(2.4.51):不受影响-漏洞代码不存在
5.openEuler-24.03-LTS(2.4.58):不受影响-漏洞代码不存在
6.openEuler-24.03-LTS-Next(2.4.58):不受影响-漏洞代码不存在
7.openEuler-24.03-LTS-SP1(2.4.58):不受影响-漏洞代码不存在
8.openEuler-24.03-LTS-SP2(2.4.58):不受影响-漏洞代码不存在

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