Описание
sudo-rs Allows Low Privilege Users to Discover the Existence of Files in Inaccessible Folders
Summary
Users with no (or very limited) sudo privileges can determine whether files exists in folders that they otherwise cannot access using sudo --list <pathname>.
PoC
As root:
As a user without any (or limited) sudo rights:
I.e. the user can distinguish whether files exist.
Related
Original sudo (vulnerable version tested by us: 1.9.15p5) exhibited similar behaviour for files with the executable bit set.
Impact
Users with local access to a machine can discover the existence/non-existence of certain files, revealing potentially sensitive information in the file names. This information can also be used in conjunction with other attacks.
Credits
This issue was identified by sudo-rs developer Marc Schoolderman
Пакеты
sudo-rs
<= 0.2.5
0.2.6
Связанные уязвимости
sudo-rs is a memory safe implementation of sudo and su written in Rust. Prior to version 0.2.6, users with no (or very limited) sudo privileges can determine whether files exists in folders that they otherwise cannot access using `sudo --list <pathname>`. Users with local access to a machine can discover the existence/non-existence of certain files, revealing potentially sensitive information in the file names. This information can also be used in conjunction with other attacks. Version 0.2.6 fixes the vulnerability.
sudo-rs is a memory safe implementation of sudo and su written in Rust. Prior to version 0.2.6, users with no (or very limited) sudo privileges can determine whether files exists in folders that they otherwise cannot access using `sudo --list <pathname>`. Users with local access to a machine can discover the existence/non-existence of certain files, revealing potentially sensitive information in the file names. This information can also be used in conjunction with other attacks. Version 0.2.6 fixes the vulnerability.
sudo-rs is a memory safe implementation of sudo and su written in Rust ...