CVE-2020-14339

一、漏洞信息
 漏洞编号：[CVE-2020-14339](https://nvd.nist.gov/vuln/detail/CVE-2020-14339)
 漏洞归属组件：[libvirt](https://gitee.com/src-openeuler/libvirt)
 漏洞归属的版本：6.2.0
 CVSS V3.0分值：
  BaseScore：8.8 High
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
 漏洞简述：
  A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
 漏洞公开时间：2020-12-04 01:15
 漏洞创建时间：2020-12-30 06:17:39
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2020-14339
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| vigilance | https://vigilance.fr/vulnerability/libvirt-privilege-escalation-via-dev-mapper-control-33077 |  |
| bugzilla |  https://bugzilla.redhat.com/show_bug.cgi?id=1860069 |  |

</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:
  其它
 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：
    该漏洞会导致/dev/mapper/control的文件句柄泄漏，从而出现qemu虚拟机提权操作，进一步对主机造成严重损害。 
 openEuler评分：
  8.8
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:C/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(6.2.0):受影响
2.openEuler-20.09(6.2.0):受影响
3.03-LTS-SP1:受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(6.2.0):
2.openEuler-20.03-LTS-SP3(6.2.0):
3.openEuler-22.03-LTS(6.2.0):
4.openEuler-22.03-LTS-SP1(6.2.0):

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2021-1010

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