1. 修复的CVE信息

• CVE-2021-3634

  Libssh是Libssh组织的一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。libssh 存在缓冲区错误漏洞，该漏洞源于 libssh 允许在密钥重新交换操作中改变密钥交换方法。改变密钥交换方法时，如果采用不同长度的 hash ，将会导致缓冲区错误。

2. 影响的操作系统

银河麒麟桌面操作系统V10 SP1

3. 修复版本

软件包：libssh

0.9.3-2kylin2.2(V10 SP1)

4. 受影响的软件包

• 银河麒麟桌面操作系统V10 SP1

libssh-4

libssh-dev

libssh-doc

libssh-gcrypt-4

libssh-gcrypt-dev

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

• 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/libs/libssh/libssh-gcrypt-dev_0.9.3-2kylin2.2_amd64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-4_0.9.3-2kylin2.2_amd64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-gcrypt-4_0.9.3-2kylin2.2_amd64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-dev_0.9.3-2kylin2.2_amd64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-doc_0.9.3-2kylin2.2_all.deb

  arm64软件包下载地址：

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-gcrypt-dev_0.9.3-2kylin2.2_arm64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-4_0.9.3-2kylin2.2_arm64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-gcrypt-4_0.9.3-2kylin2.2_arm64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-dev_0.9.3-2kylin2.2_arm64.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-doc_0.9.3-2kylin2.2_all.deb

  mips64el软件包下载地址：

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-gcrypt-dev_0.9.3-2kylin2.2_mips64el.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-4_0.9.3-2kylin2.2_mips64el.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-gcrypt-4_0.9.3-2kylin2.2_mips64el.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-dev_0.9.3-2kylin2.2_mips64el.deb

  http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libs/libssh/libssh-doc_0.9.3-2kylin2.2_all.deb