安全公告/【CVE-2019-6111】

基本信息

漏洞描述

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

漏洞判定

执行命令apt policy PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

修复方式

sudo apt update && sudo apt dist-upgrade

参考

https://security-tracker.debian.org/tracker/CVE-2019-6111 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6111 https://nvd.nist.gov/vuln/detail/CVE-2019-6111