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[USN-7867-1] sudo-rs vulnerabilities

Posted on 10 November 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7867-1
November 10, 2025

rust-sudo-rs vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10

Summary:

Several security issues were fixed in sudo-rs.

Software Description:
- rust-sudo-rs: Rust-based sudo and su implementations

Details:

It was discovered that sudo-rs incorrectly handled passwords when timeouts
occurred and the pwfeedback default was not set. This could result in a
partially typed password being output to standard input, contrary to
expectations.

It was discovered that sudo-rs incorrectly handled the targetpw and rootpw
default settings when creating timestamp files. A local attacker could
possibly use this issue to bypass authentication in certain configurations.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
sudo-rs 0.2.8-1ubuntu5.2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7867-1
https://launchpad.net/bugs/2130623

Package Information:
https://launchpad.net/ubuntu/+source/rust-sudo-rs/0.2.8-1ubuntu5.2

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