CVE-2021-3975

一、漏洞信息
漏洞编号：CVE-2021-3975
漏洞归属组件：libvirt
漏洞归属的版本：6.2.0
CVSS V3.0分值：
BaseScore：6.5 Medium
Vector：CVSS：3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
漏洞简述：
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.
漏洞公开时间：2022-08-24 04:15:00
漏洞创建时间：2022-08-25 15:35:52
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-3975

更多参考(点击展开)

参考来源	参考链接	来源链接
nvd	https://access.redhat.com/security/cve/CVE-2021-3975
nvd	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
nvd	https://ubuntu.com/security/CVE-2021-3975
nvd	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
nvd	https://security.netapp.com/advisory/ntap-20221201-0002/
redhat	https://access.redhat.com/security/cve/CVE-2021-3975
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2024326	https://bugzilla.suse.com/show_bug.cgi?id=1192876
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-3975	https://bugzilla.suse.com/show_bug.cgi?id=1192876
redhat_bugzilla	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2022:1759	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
redhat_bugzilla	https://access.redhat.com/security/cve/cve-2021-3975	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3975	https://ubuntu.com/security/CVE-2021-3975
ubuntu	https://ubuntu.com/security/notices/USN-5399-1	https://ubuntu.com/security/CVE-2021-3975
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-3975	https://ubuntu.com/security/CVE-2021-3975
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-3975	https://ubuntu.com/security/CVE-2021-3975
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-3975	https://ubuntu.com/security/CVE-2021-3975
ubuntu	https://bugzilla.redhat.com/show_bug.cgi?id=2024326	https://ubuntu.com/security/CVE-2021-3975
debian		https://security-tracker.debian.org/tracker/CVE-2021-3975
oracle		https://www.oracle.com/security-alerts/linuxbulletinapr2022.html
anolis		https://anas.openanolis.cn/cves/detail/CVE-2021-3975
cve_search		https://access.redhat.com/security/cve/CVE-2021-3975
cve_search		https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
cve_search		https://ubuntu.com/security/CVE-2021-3975
cve_search		https://bugzilla.redhat.com/show_bug.cgi?id=2024326
cve_search		https://security.netapp.com/advisory/ntap-20221201-0002/
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-3975
redhat_bugzilla	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2022:1759
redhat_bugzilla	https://access.redhat.com/security/cve/cve-2021-3975
redhat_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3975
ubuntu	https://ubuntu.com/security/notices/USN-5399-1
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-3975
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-3975
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-3975
ubuntu	https://bugzilla.redhat.com/show_bug.cgi?id=2024326
debian	https://security-tracker.debian.org/tracker/CVE-2021-3975
oracle	https://www.oracle.com/security-alerts/linuxbulletinapr2022.html
anolis	https://anas.openanolis.cn/cves/detail/CVE-2021-3975
nvd	https://access.redhat.com/security/cve/CVE-2021-3975
nvd	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
nvd	https://ubuntu.com/security/CVE-2021-3975
nvd	https://bugzilla.redhat.com/show_bug.cgi?id=2024326

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：

详情(点击展开)

影响的包	修复版本	修复补丁	问题引入补丁	来源
		https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7		nvd
		https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7		redhat_bugzilla

二、漏洞分析结构反馈
影响性分析说明：
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.
openEuler评分：
5.3
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.openEuler-20.03-LTS-SP1(6.2.0):受影响
2.openEuler-20.03-LTS-SP3(6.2.0):受影响
3.openEuler-22.03-LTS(6.2.0):受影响
4.openEuler-22.09(6.2.0):受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(6.2.0):否
2.openEuler-20.03-LTS-SP3(6.2.0):否
3.openEuler-22.03-LTS(6.2.0):否
4.openEuler-22.09(6.2.0):否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2022-1891

Hi ryuo, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Virt, and any of the maintainers: @Bin Wu , @ZhiGang , @alexchen , @imxcc , @朱科潜 , @Chuan , @frankyj915 , @yezengruan , @ZhangBo , @yubihong

@Bin Wu ,@ZhiGang ,@alexchen ,@imxcc ,@朱科潜 ,@Chuan ,@frankyj915 ,@yezengruan ,@ZhangBo ,@yubihong
issue处理注意事项:
1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;
2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;
3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后cve-manager将无法正常解析填写内容.

影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响):
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-22.09:

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-22.09:

issue处理具体操作请参考:
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

参考网址	关联pr	状态	补丁链接
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-3975	None	None	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
https://www.opencve.io/cve/CVE-2021-3975	None	None	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
https://security-tracker.debian.org/tracker/CVE-2021-3975	None	None	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
https://ubuntu.com/security/CVE-2021-3975	None	None	https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2021-3975

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

@wangxiaoya CVE信息从NVD同步成功, 稍后请重新加载页面.

影响性分析说明:
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

openEuler评分: (评分和向量)
BaseScore：0.0 Low

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(6.2.0):受影响
2.openEuler-20.03-LTS-SP3(6.2.0):受影响
3.openEuler-22.03-LTS(6.2.0):受影响
4.openEuler-22.09:受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(6.2.0):否
2.openEuler-20.03-LTS-SP3(6.2.0):否
3.openEuler-22.03-LTS(6.2.0):否
4.openEuler-22.09:否

@yezengruan 2.openEulerScore=> 没有填写或正确填写(0-10)

影响性分析说明:
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

openEuler评分: (评分和向量)
0.0

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(6.2.0):受影响
2.openEuler-20.03-LTS-SP3(6.2.0):受影响
3.openEuler-22.03-LTS(6.2.0):受影响
4.openEuler-22.09:受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(6.2.0):否
2.openEuler-20.03-LTS-SP3(6.2.0):否
3.openEuler-22.03-LTS(6.2.0):否
4.openEuler-22.09:否

@yezengruan 2.openEulerScore=> 没有填写或正确填写(0-10)

影响性分析说明:
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

openEuler评分: (评分和向量)
0.0 Low

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(6.2.0):受影响
2.openEuler-20.03-LTS-SP3(6.2.0):受影响
3.openEuler-22.03-LTS(6.2.0):受影响
4.openEuler-22.09:受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(6.2.0):否
2.openEuler-20.03-LTS-SP3(6.2.0):否
3.openEuler-22.03-LTS(6.2.0):否
4.openEuler-22.09:否

@yezengruan 2.openEulerScore=> 没有填写或正确填写(0-10)

影响性分析说明:
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

openEuler评分: (评分和向量)
5.3
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(6.2.0):受影响
2.openEuler-20.03-LTS-SP3(6.2.0):受影响
3.openEuler-22.03-LTS(6.2.0):受影响
4.openEuler-22.09:受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(6.2.0):否
2.openEuler-20.03-LTS-SP3(6.2.0):否
3.openEuler-22.03-LTS(6.2.0):否
4.openEuler-22.09:否

@yezengruan 经过 cve-manager 解析, 已分析的内容如下表所示:

状态	需分析	内容
已分析	1.影响性分析说明	A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.
已分析	2.openEulerScore	5.3
已分析	2.openEulerVector	AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
已分析	3.受影响版本排查	openEuler-20.03-LTS-SP1:受影响,openEuler-20.03-LTS-SP3:受影响,openEuler-22.03-LTS:受影响,openEuler-22.09:受影响
已分析	4.修复是否涉及abi变化	openEuler-20.03-LTS-SP1:否,openEuler-20.03-LTS-SP3:否,openEuler-22.03-LTS:否,openEuler-22.09:否

请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.

@zhanghailiang ,@Bin Wu ,@ZhiGang ,@alexchen ,@王征 ,@imxcc ,@朱科潜 ,@frankyj915 ,@yezengruan
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I5O3BC:CVE-2021-3975
受影响分支: openEuler-20.03-LTS-SP1/openEuler-20.03-LTS-SP3/openEuler-22.03-LTS
具体操作参考: https://gitee.com/help/articles/4142

@zhanghailiang ,@Bin Wu ,@ZhiGang ,@alexchen ,@王征 ,@imxcc ,@朱科潜 ,@frankyj915 ,@yezengruan
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I5O3BC:CVE-2021-3975
受影响分支: openEuler-22.03-LTS/openEuler-20.03-LTS-SP1/openEuler-20.03-LTS-SP3
具体操作参考: https://gitee.com/help/articles/4142

@zhanghailiang ,@Bin Wu ,@ZhiGang ,@alexchen ,@王征 ,@imxcc ,@朱科潜 ,@frankyj915 ,@yezengruan
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I5O3BC:CVE-2021-3975
受影响分支: openEuler-20.03-LTS-SP1/openEuler-22.03-LTS
具体操作参考: https://gitee.com/help/articles/4142

@zhanghailiang ,@Bin Wu ,@ZhiGang ,@alexchen ,@王征 ,@imxcc ,@朱科潜 ,@frankyj915 ,@yezengruan
关闭issue前,需要将受影响的分支在合并pr时关联上当前issue编号: #I5O3BC:CVE-2021-3975
受影响分支: openEuler-22.03-LTS
具体操作参考: https://gitee.com/help/articles/4142

src-openEuler / libvirt

内容风险标识

评论 (18)

src-openEuler / libvirt .gitee-modal { width: 500px !important; }

内容风险标识

CVE-2021-3975

评论 (18)

搜索帮助

src-openEuler / libvirt