CVE-2021-23980

一、漏洞信息
 漏洞编号：[CVE-2021-23980](https://nvd.nist.gov/vuln/detail/CVE-2021-23980)
 漏洞归属组件：[python-bleach](https://gitee.com/src-openeuler/python-bleach)
 漏洞归属的版本：3.2.1
 CVSS V2.0分值：
  BaseScore：0.0 Low
  Vector：CVSS：2.0/
 漏洞简述：
  A mutation XSS affects users calling bleach.clean with all of:- svg or math in the allowed tags- p or br in allowed tags- style in allowed tags- the keyword argument strip_comments=FalseNote: none of the above tags are in the default allowed tags and strip_comments defaults to True.
 漏洞公开时间：
 漏洞创建时间：2022-08-13 01:58:09
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-23980
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| suse_bugzilla | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq | https://bugzilla.suse.com/show_bug.cgi?id=1184547 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=1925252 | https://bugzilla.suse.com/show_bug.cgi?id=1184547 |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-23980 | https://bugzilla.suse.com/show_bug.cgi?id=1184547 |
| suse_bugzilla | https://access.redhat.com/errata/RHSA-2021:0781 | https://bugzilla.suse.com/show_bug.cgi?id=1184547 |
| suse_bugzilla | https://access.redhat.com/security/cve/CVE-2021-23980 | https://bugzilla.suse.com/show_bug.cgi?id=1184547 |
| redhat_bugzilla | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq | https://bugzilla.redhat.com/show_bug.cgi?id=1925252 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23980 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://bugzilla.mozilla.org/show_bug.cgi?id=1689399 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://github.com/mozilla/bleach/commit/79b7a3c5e56a09d1d323a5006afa59b56162eb13 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://github.com/mozilla/bleach/commit/d398c89e54ced6b1039d3677689707456ba42dec | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-23980 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-23980 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-23980 | https://ubuntu.com/security/CVE-2021-23980 |
| ubuntu | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986251 | https://ubuntu.com/security/CVE-2021-23980 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2021-23980 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2021-23980 |
| suse_bugzilla | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq |  |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=1925252 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-23980 |  |
| suse_bugzilla | https://access.redhat.com/errata/RHSA-2021:0781 |  |
| suse_bugzilla | https://access.redhat.com/security/cve/CVE-2021-23980 |  |
| redhat_bugzilla | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq |  |
| redhat_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=1925252 |  |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23980 |  |
| ubuntu | https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq |  |
| ubuntu | https://bugzilla.mozilla.org/show_bug.cgi?id=1689399 |  |
| ubuntu | https://github.com/mozilla/bleach/commit/79b7a3c5e56a09d1d323a5006afa59b56162eb13 |  |
| ubuntu | https://github.com/mozilla/bleach/commit/d398c89e54ced6b1039d3677689707456ba42dec |  |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-23980 |  |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-23980 |  |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-23980 |  |
| ubuntu | http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986251 |  |
| debian | https://security-tracker.debian.org/tracker/CVE-2021-23980 |  |
| anolis | https://anas.openanolis.cn/cves/detail/CVE-2021-23980 |  |

</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/mozilla/bleach/commit/79b7a3c5e56a09d1d323a5006afa59b56162eb13 |  | ubuntu |
|  |  | https://github.com/mozilla/bleach/commit/d398c89e54ced6b1039d3677689707456ba42dec |  | ubuntu |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
      在bleach的3.3.0之前的版本中，如果用户输入异常XSS的时候，会导致bleach.clean失效，包含的异常输入包括:tags中包含svg或者mathtags中包含p或者brtags中包含style, title, noscript, script, textarea, noframes, iframe, 或 xmpstrip_comments设置为False  
 openEuler评分：
  6.1
 Vector：CVSS：2.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS(5.0.1):受影响
2.openEuler-22.09(5.0.1):受影响
3.master(5.0.1):不受影响
4.openEuler-20.03-LTS-SP1:不受影响
5.openEuler-20.03-LTS-SP3(5.0.1):不受影响

修复是否涉及abi变化(是/否)：
  1.master(5.0.1):否
2.openEuler-20.03-LTS-SP1:否
3.openEuler-20.03-LTS-SP3(5.0.1):否
4.openEuler-22.03-LTS(5.0.1):否
5.openEuler-22.09(5.0.1):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2022-1861

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