CVE-2022-41973

一、漏洞信息
 漏洞编号：[CVE-2022-41973](https://nvd.nist.gov/vuln/detail/CVE-2022-41973)
 漏洞归属组件：[multipath-tools](https://gitee.com/src-openeuler/multipath-tools)
 漏洞归属的版本：0.8.4,0.8.5,0.8.7
 CVSS V3.0分值：
  BaseScore：7.8 High
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 漏洞简述：
  multipath-tools 0.7.7 through 0.9.x before 0.9.2 allows local users to obtain root access, as exploited in conjunction with CVE-2022-41974. Local users able to access /dev/shm can change symlinks in multipathd due to incorrect symlink handling, which could lead to controlled file writes outside of the /dev/shm directory. This could be used indirectly for local privilege escalation to root.
 漏洞公开时间：2022-10-30 02:15:00
 漏洞创建时间：2022-10-24 19:05:04
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-41973
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| nvd | https://github.com/opensvc/multipath-tools/releases/tag/0.9.2 |  |
| nvd | http://www.openwall.com/lists/oss-security/2022/10/24/2 |  |
| nvd | https://bugzilla.suse.com/show_bug.cgi?id=1202739 |  |
| nvd | http://seclists.org/fulldisclosure/2022/Oct/25 |  |
| nvd | http://packetstormsecurity.com/files/169611/Leeloo-Multipath-Authorization-Bypass-Symlink-Attack.html |  |
| nvd | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QIGZM5NOOMFDCITOLQEJNNX5SCRQLQVV/ |  |
| nvd | https://www.qualys.com/2022/10/24/leeloo-multipath/leeloo-multipath.txt |  |
| nvd | http://www.openwall.com/lists/oss-security/2022/11/30/2 |  |
| nvd | http://seclists.org/fulldisclosure/2022/Dec/4 |  |
| nvd | http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html |  |
| nvd | https://lists.debian.org/debian-lts-announce/2022/12/msg00037.html |  |
| redhat | https://access.redhat.com/security/cve/CVE-2022-41973 |  |
| redhat_bugzilla | https://www.qualys.com/2022/10/24/leeloo-multipath/leeloo-multipath.txt | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |
| redhat_bugzilla | https://www.openwall.com/lists/oss-security/2022/10/24/2 | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |
| redhat_bugzilla | https://ubuntu.com/server/docs/device-mapper-multipathing-introduction | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |
| redhat_bugzilla | https://github.com/opensvc/multipath-tools | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |
| redhat_bugzilla | https://www.openwall.com/lists/kernel-hardening/2017/06/06/74 | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41973 | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://www.qualys.com/2022/10/24/leeloo-multipath/leeloo-multipath.txt | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://ubuntu.com/security/notices/USN-5731-1 | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2022-41973 | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2022-41973 | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2022-41973 | https://ubuntu.com/security/CVE-2022-41973 |
| ubuntu | https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1022742 | https://ubuntu.com/security/CVE-2022-41973 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2022-41973 |
| cve_search |  | https://github.com/opensvc/multipath-tools/releases/tag/0.9.2 |
| cve_search |  | http://www.openwall.com/lists/oss-security/2022/10/24/2 |
| cve_search |  | https://bugzilla.suse.com/show_bug.cgi?id=1202739 |
| cve_search |  | http://seclists.org/fulldisclosure/2022/Oct/25 |
| cve_search |  | http://packetstormsecurity.com/files/169611/Leeloo-Multipath-Authorization-Bypass-Symlink-Attack.html |
| cve_search |  | https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QIGZM5NOOMFDCITOLQEJNNX5SCRQLQVV/ |
| cve_search |  | https://www.qualys.com/2022/10/24/leeloo-multipath/leeloo-multipath.txt |
| cve_search |  | http://www.openwall.com/lists/oss-security/2022/11/30/2 |
| cve_search |  | http://seclists.org/fulldisclosure/2022/Dec/4 |
| cve_search |  | http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html |
| cve_search |  | https://lists.debian.org/debian-lts-announce/2022/12/msg00037.html |
| nvd | http://packetstormsecurity.com/files/169611/Leeloo-Multipath-Authorization-Bypass-Symlink-Attack.html |  |
| nvd | https://github.com/opensvc/multipath-tools/releases/tag/0.9.2 |  |
| nvd | http://www.openwall.com/lists/oss-security/2022/10/24/2 |  |
| nvd | https://bugzilla.suse.com/show_bug.cgi?id=1202739 |  |
| nvd | http://seclists.org/fulldisclosure/2022/Oct/25 |  |
| nvd | http://packetstormsecurity.com/files/169611/Leeloo-Multipath-Authorization-Bypass-Symlink-Attack.html |  |
| redhat_bugzilla | https://www.qualys.com/2022/10/24/leeloo-multipath/leeloo-multipath.txt |  |
| redhat_bugzilla | https://www.openwall.com/lists/oss-security/2022/10/24/2 |  |
| redhat_bugzilla | https://ubuntu.com/server/docs/device-mapper-multipathing-introduction |  |
| redhat_bugzilla | https://github.com/opensvc/multipath-tools |  |
| redhat_bugzilla | https://www.openwall.com/lists/kernel-hardening/2017/06/06/74 |  |
| redhat_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2123894 |  |
| debian | https://security-tracker.debian.org/tracker/CVE-2022-41973 |  |

</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>

无
</details>

二、漏洞分析结构反馈
 影响性分析说明：
      0.9.2之前的multipath-tools 0.7.7至0.9.x允许本地用户获得根访问权限，与CVE-2022-41974结合使用。由于符号链接处理不正确，能够访问/dev/shm的本地用户可以更改多路径中的符号链接，这可能导致/dev/shm目录之外的受控文件写入。这可以间接用于将本地权限提升到root。  
 openEuler评分：
  7.8
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(0.8.4):受影响
2.openEuler-20.03-LTS-SP3(0.8.4):受影响
3.openEuler-22.03-LTS(0.8.7):受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(0.8.4):否
2.openEuler-20.03-LTS-SP3(0.8.4):否
3.openEuler-22.03-LTS(0.8.7):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2022-2042

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