1.修復的CVE
CVE-2020-24386
Dovecot是一款開源的基于類Linux/UNIX系統的IMAP和POP3郵件服務器。Dovecot before 2.3.13 存在安全漏洞，攻擊者可利用該漏洞控制的參數觸發解除休眠，從而訪問其他用戶的電子郵件消息。
CVE-2020-25275
Dovecot是一款開源的基于類Linux/UNIX系統的IMAP和POP3郵件服務器。Dovecot before 2.3.13 存在安全漏洞，該漏洞源于不正確的輸入驗證，攻擊者可利用該漏洞通過一個精心制作的電子郵件消息導致應用程序崩潰。
銀河麒麟桌面操作系統V4 SP1
銀河麒麟桌面操作系統V4 SP2
銀河麒麟桌面操作系統V4 SP3
銀河麒麟桌面操作系統V4 SP4
銀河麒麟服務器操作系統V4 SP1
銀河麒麟服務器操作系統V4 SP2
銀河麒麟服務器操作系統V4 SP3
銀河麒麟服務器操作系統V4 SP4
銀河麒麟桌面操作系統V10
銀河麒麟桌面操作系統V10 SP1
軟件包：dovecot
1:2.2.22-1kord2.14（V4、V10）
1:2.3.7.2-1kylin3.3(V10 SP1)
·銀河麒麟操作系統V10桌面版、V4
dovecot-auth-lua
dovecot-core
dovecot-dev
dovecot-gssapi
dovecot-imapd
dovecot-ldap
dovecot-lmtpd
dovecot-lucene
dovecot-managesieved
dovecot-mysql
dovecot-pgsql
dovecot-pop3d
dovecot-sieve
dovecot-solr
dovecot-sqlite
dovecot-submissiond
mail-stack-delivery
·銀河麒麟桌面操作系統V10 SP1
dovecot-auth-lua
dovecot-core
dovecot-dev
dovecot-gssapi
dovecot-imapd
dovecot-ldap
dovecot-lmtpd
dovecot-lucene
dovecot-managesieved
dovecot-mysql
dovecot-pgsql
dovecot-pop3d
dovecot-sieve
dovecot-solr
dovecot-sqlite
dovecot-submissiond
mail-stack-delivery
打開軟件包源配置文件，根據倉庫地址進行修改。
4.0.2桌面版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2-desktop main restricted universe multiverse
4.0.2-sp1桌面版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse
4.0.2-sp2桌面版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse
4.0.2-sp3桌面版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse
4.0.2-sp4桌面版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse
10.0版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 10.0 main restricted universe multiverse
10SP1版本:
http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1 main restricted universe multiverse
配置完成后執行更新命令進行升級
$sudo apt update
通過軟件包地址下載軟件包，使用軟件包升級命令根據受影響的組件包列表 升級相關的組件包。
$dpkg -i Packagelists
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