CVE-2025-61912

一、漏洞信息
 漏洞编号：[CVE-2025-61912](https://nvd.nist.gov/vuln/detail/CVE-2025-61912)
 漏洞归属组件：[python-ldap](https://gitee.com/src-openeuler/python-ldap)
 漏洞归属的版本：2.4.15,3.1.0,3.3.1,3.4.3,3.4.4
 CVSS V4.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
 漏洞简述：
  python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, ldap.dn.escape_dn_chars() escapes  x00 incorrectly by emitting a backslash followed by a literal NUL byte instead of the RFC-4514 hex form  00. Any application that uses this helper to construct DNs from untrusted input can be made to consistently fail before a request is sent to the LDAP server (e.g., AD), resulting in a client-side denial of service. Version 3.4.5 contains a patch for the issue.
 漏洞公开时间：2025-10-11 06:15:37
 漏洞创建时间：2025-10-11 06:21:31
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-61912
<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/python-ldap/python-ldap |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2682 |  |
|  | https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2686 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-61912 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2403230 |  |
|  | https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f |  |
|  | https://security-tracker.debian.org/tracker/CVE-2025-61912 |  |
|  | https://github.com/advisories/GHSA-p34h-wq7j-h5v6 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-61911 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2681 |  |
|  | https://github.com/python-ldap/python-ldap/commit/9f5b2effbafdf7af0e7064a7aa42d2739d373bd7 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2685 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-61912 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2684 |  |
|  | https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5 |  |
|  | https://www.mend.io/vulnerability-database/CVE-2025-61912 |  |

</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  |
| ------- | -------- | ------- | -------- | --------- |
| python-ldap/python-ldap |  | https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f |  | ljqc |
|  |  | https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f |  | cvelistv5 |
|  |  | https://github.com/python-ldap/python-ldap/commit/9f5b2effbafdf7af0e7064a7aa42d2739d373bd7 |  | snyk |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
        在 python-ldap 的 escape_dn_chars() 函数中，当处理包含空字符  x00 的字符串时，没有按照 RFC 4514 的规范进行转义，而是错误地输出了  00（即一个反斜杠加一个空字符），而不是正确的  00（即两个十六进制数字表示空字符）。可能会导致构造出非法的的 DN（Distinguished Name） 字符串。应用程序在发送请求前就会失败，从而导致 客户端拒绝服务（DoS）。   
 openEuler评分：
  5.3
 Vector：CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
 受影响版本排查(受影响/不受影响)：
  1.master(3.4.5):受影响
2.openEuler-20.03-LTS-SP4(3.1.0):受影响
3.openEuler-22.03-LTS-SP3(3.3.1):受影响
4.openEuler-22.03-LTS-SP4(3.3.1):受影响
5.openEuler-24.03-LTS(3.4.4):受影响
6.openEuler-24.03-LTS-Next(3.4.4):受影响
7.openEuler-24.03-LTS-SP1(3.4.4):受影响
8.openEuler-24.03-LTS-SP2(3.4.4):受影响

修复是否涉及abi变化(是/否)：
  1.master(3.4.5):否
2.openEuler-20.03-LTS-SP4(3.1.0):否
3.openEuler-22.03-LTS-SP3(3.3.1):否
4.openEuler-22.03-LTS-SP4(3.3.1):否
5.openEuler-24.03-LTS(3.4.4):否
6.openEuler-24.03-LTS-Next(3.4.4):否
7.openEuler-24.03-LTS-SP1(3.4.4):否
8.openEuler-24.03-LTS-SP2(3.4.4):否

原因说明：
  1.master(3.4.5):正常修复
2.openEuler-20.03-LTS-SP4(3.1.0):正常修复
3.openEuler-22.03-LTS-SP3(3.3.1):正常修复
4.openEuler-22.03-LTS-SP4(3.3.1):正常修复
5.openEuler-24.03-LTS(3.4.4):正常修复
6.openEuler-24.03-LTS-Next(3.4.4):正常修复
7.openEuler-24.03-LTS-SP1(3.4.4):正常修复
8.openEuler-24.03-LTS-SP2(3.4.4):正常修复

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CVE-2025-61912

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