1. 修復的CVE信息
CVE-2021-3634
Libssh是Libssh組織的一個用于訪問SSH服務的C語言開發包，它能夠執行遠程命令、文件傳輸，同時為遠程的程序提供安全的傳輸通道。libssh 存在緩沖區錯誤漏洞，該漏洞源于 libssh 允許在密鑰重新交換操作中改變密鑰交換方法。改變密鑰交換方法時，如果采用不同長度的 hash ，將會導致緩沖區錯誤。
2. 影響的操作系統
銀河麒麟桌面操作系統V10 SP1
3. 修復版本
軟件包：libssh
0.9.3-2kylin2.2(V10 SP1)
4. 受影響的軟件包
銀河麒麟桌面操作系統V10 SP1
libssh-4
libssh-dev
libssh-doc
libssh-gcrypt-4
libssh-gcrypt-dev
5. 修復方法
方法一：配置源進行升級安裝
打開軟件包源配置文件，根據倉庫地址進行修改。
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
配置完成后執行更新命令進行升級。$sudo apt update
方法二：下載安裝包進行升級安裝
通過軟件包地址下載軟件包，使用軟件包升級命令根據受影響的組件包列表 升級相關的組件包。$dpkg -i Packagelists
6. 軟件包下載地址
銀河麒麟桌面操作系統V10 SP1
X86_64軟件包下載地址：
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
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
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
