1. 修复的CVE信息
CVE-2021-20277
描述：针对AD DC LDAP服务器的用户控制的LDAP筛选器字符串可能会使LDAP服务器崩溃。
CVE-2020-27840
描述：匿名攻击者可以通过发送轻松制作的DN作为绑定请求的一部分来使Samba AD DC LDAP服务器崩溃。更严重的堆损坏也可能发生。
2. 受影响的操作系统
银河麒麟桌面操作系统V4 SP1
银河麒麟桌面操作系统V4 SP2
银河麒麟桌面操作系统V4 SP3
银河麒麟桌面操作系统V4 SP4
银河麒麟桌面操作系统V10
银河麒麟桌面操作系统V10 SP1
银河麒麟服务器操作系统V4 SP1
银河麒麟服务器操作系统V4 SP2
银河麒麟服务器操作系统V4 SP3
银河麒麟服务器操作系统V4 SP4
3. 修复版本
软件包：ldb
libldb1-2:1.1.24-1kord3.2（V4、V10）
libldb2-2:2.0.10-0kylin0.20.04.3（V10 SP1）
4. 受影响的软件包
银河麒麟桌面操作系统V4桌面版
ldb-tools
libldb-dev
libldb1-dbg
libldb1
python-ldb-dbg
python-ldb-dev
python-ldb
python3-ldb-dbg
python3-ldb-dev
python3-ldb
银河麒麟桌面操作系统V10桌面版
ldb-tools
libldb-dev
libldb1-dbg
libldb1
python-ldb-dbg
python-ldb-dev
python-ldb
python3-ldb-dbg
python3-ldb-dev
python3-ldb
银河麒麟桌面操作系统V10 SP1
ldb-tools
libldb-dev
libldb2
python3-ldb-dev
python3-ldb
5.修复方法
方法一：配置源进行升级安装
打开软件包源配置文件，根据仓库地址进行修改。
4.0.2-sp1: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse
4.0.2-sp2: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse
4.0.2-sp3: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse
4.0.2-sp4: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse
10.0: http://archive.kylinos.cn/kylin/KYLIN-ALL 10.0 main restricted universe multiverse
10.0 SP1: http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1 main restricted universe multiverse
配置完成后执行更新命令进行升级 $sudo apt update
方法二：下载安装包进行升级安装
通过软件包地址下载软件包，使用软件包升级命令根据受影响的组件包列表 升级相关的组件包。 $dpkg -i Packagelists
6. 软件包下载地址
麒麟操作系统V10桌面版、V4
X86_64软件包下载地址：
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/ldb-tools_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb-dev_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb1-dbg_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb1_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb-dbg_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb-dev_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb-dbg_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb-dev_1.1.24-1kord3.2_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb_1.1.24-1kord3.2_amd64.deb
arm64软件包下载地址：
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/ldb-tools_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb-dev_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb1-dbg_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb1_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb-dbg_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb-dev_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python-ldb_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb-dbg_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb-dev_1.1.24-1kord3.2_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/python3-ldb_1.1.24-1kord3.2_arm64.deb
银河麒麟桌面操作系统V10 SP1
X86_64软件包下载地址：
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/ldb-tools_2.0.10-0kylin0.20.04.3_amd64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb2_2.0.10-0kylin0.20.04.3_amd64.deb
arm64软件包下载地址：
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/ldb-tools_2.0.10-0kylin0.20.04.3_arm64.deb
http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/l/ldb/libldb2_2.0.10-0kylin0.20.04.3_arm64.deb
mips64el软件包下载地址：
