公告ID（KYSA-202112-1028）

摘要：libvirt漏洞安全等級：低等發(fā)布日期：2021-12-17 影響CVE：CVE-2021-3631、CVE-2021-3667

詳細介紹

1. 修復的CVE信息

CVE-2021-3631
描述：libvirt 在為 VM 的動態(tài)標簽生成 SELinux MCS 類別對時發(fā)現(xiàn)了一個漏洞。該漏洞允許一個被利用的訪客訪問標記為另一個訪客的文件，從而突破 sVirt 限制。此漏洞的最大威脅是機密性和完整性。
CVE-2021-3667
描述：在 libvirt 的 virStoragePoolLookupByTargetPath API 中存在不正確的鎖定漏洞。它是發(fā)生在 storagePoolLookupByTargetPath 函數(shù)中，其中鎖定的 virStoragePoolObj 對象在 ACL 權限失敗時未正確釋放。連接到具有有限 ACL 權限的讀寫套接字的客戶端可以使用此缺陷來獲取鎖并阻止其他用戶訪問存儲池/卷 API,從而導致拒絕服務條件。此漏洞的最大威脅是系統(tǒng)可用性。

2. 影響的操作系統(tǒng)及修復版本

銀河麒麟高級服務器操作系統(tǒng) V10 SP2

libvirt-6.2.0-13.p01.ky10

libvirt-admin-6.2.0-13.p01.ky10

libvirt-bash-completion-6.2.0-13.p01.ky10

libvirt-client-6.2.0-13.p01.ky10

libvirt-daemon-6.2.0-13.p01.ky10

libvirt-daemon-config-network-6.2.0-13.p01.ky10

libvirt-daemon-config-nwfilter-6.2.0-13.p01.ky10

libvirt-daemon-driver-interface-6.2.0-13.p01.ky10

libvirt-daemon-driver-network-6.2.0-13.p01.ky10

libvirt-daemon-driver-nodedev-6.2.0-13.p01.ky10

libvirt-daemon-driver-nwfilter-6.2.0-13.p01.ky10

libvirt-daemon-driver-qemu-6.2.0-13.p01.ky10

libvirt-daemon-driver-secret-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-core-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-disk-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-gluster-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-iscsi-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-iscsi-direct-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-logical-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-mpath-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-rbd-6.2.0-13.p01.ky10

libvirt-daemon-driver-storage-scsi-6.2.0-13.p01.ky10

libvirt-daemon-kvm-6.2.0-13.p01.ky10

libvirt-daemon-qemu-6.2.0-13.p01.ky10

libvirt-devel-6.2.0-13.p01.ky10

libvirt-docs-6.2.0-13.p01.ky10

libvirt-libs-6.2.0-13.p01.ky10

libvirt-lock-sanlock-6.2.0-13.p01.ky10

libvirt-nss-6.2.0-13.p01.ky10

libvirt-wireshark-6.2.0-13.p01.ky10

3. 受影響的軟件包

銀河麒麟高級服務器操作系統(tǒng) V10 SP2
aarch64:libvirt、libvirt-admin、libvirt-bash-completion、libvirt-client、libvirt-daemon、libvirt-daemon-config-network、libvirt-daemon-config-nwfilter、libvirt-daemon-driver-interface、libvirt-daemon-driver-network、libvirt-daemon-driver-nodedev、libvirt-daemon-driver-nwfilter、libvirt-daemon-driver-qemu、libvirt-daemon-driver-secret、libvirt-daemon-driver-storage、libvirt-daemon-driver-storage-core、libvirt-daemon-driver-storage-disk、libvirt-daemon-driver-storage-gluster、libvirt-daemon-driver-storage-iscsi、libvirt-daemon-driver-storage-iscsi-direct、libvirt-daemon-driver-storage-logical、libvirt-daemon-driver-storage-mpath、libvirt-daemon-driver-storage-rbd、libvirt-daemon-driver-storage-scsi、libvirt-daemon-kvm、libvirt-daemon-qemu、libvirt-devel、libvirt-docs、libvirt-libs、libvirt-lock-sanlock、libvirt-nss、libvirt-wireshark
x86_64:libvirt、libvirt-admin、libvirt-bash-completion、libvirt-client、libvirt-daemon、libvirt-daemon-config-network、libvirt-daemon-config-nwfilter、libvirt-daemon-driver-interface、libvirt-daemon-driver-network、libvirt-daemon-driver-nodedev、libvirt-daemon-driver-nwfilter、libvirt-daemon-driver-qemu、libvirt-daemon-driver-secret、libvirt-daemon-driver-storage、libvirt-daemon-driver-storage-core、libvirt-daemon-driver-storage-disk、libvirt-daemon-driver-storage-gluster、libvirt-daemon-driver-storage-iscsi、libvirt-daemon-driver-storage-iscsi-direct、libvirt-daemon-driver-storage-logical、libvirt-daemon-driver-storage-mpath、libvirt-daemon-driver-storage-rbd、libvirt-daemon-driver-storage-scsi、libvirt-daemon-kvm、libvirt-daemon-qemu、libvirt-devel、libvirt-docs、libvirt-libs、libvirt-lock-sanlock、libvirt-nss、libvirt-wireshark

4. 修復方法

方法一：配置源進行升級安裝

1.打開軟件包源配置文件，根據(jù)倉庫地址進行修改。

倉庫源地址：

銀河麒麟高級服務器操作系統(tǒng) V10 SP2

aarch64:http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/aarch64/

x86_64:http://update.cs2c.com.cn:8080/NS/V10/V10SP2/os/adv/lic/updates/x86_64/

2.配置完成后執(zhí)行更新命令進行升級，命令如下：yum update Packagename

方法二：下載安裝包進行升級安裝

通過軟件包地址下載軟件包，使用軟件包升級命令根據(jù)受影響的軟件包列表進行升級安裝,命令如下：yum install Packagename

6. 軟件包下載地址