3.7 - USN-142-1

Executive Summary

Summary
Title	sudo vulnerability

Informations
Name	USN-142-1	First vendor Publication	2005-06-21
Vendor	Ubuntu	Last vendor Modification	2005-06-21
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:H/Au:N/C:P/I:P/A:P)
Cvss Base Score	3.7	Attack Range	Local
Cvss Impact Score	6.4	Attack Complexity	High
Cvss Expoit Score	1.9	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 4.10 (Warty Warthog) Ubuntu 5.04 (Hoary Hedgehog)

The following packages are affected:

sudo

The problem can be corrected by upgrading the affected package to version 1.6.7p5-1ubuntu4.2 (for Ubuntu 4.10), or 1.6.8p5-1ubuntu2.1 (for Ubuntu 5.04). In general, a standard system upgrade is sufficient to effect the necessary changes.

Details follow:

Charles Morris discovered a race condition in sudo which could lead to privilege escalation. If /etc/sudoers allowed a user the execution of selected programs, and this was followed by another line containing the pseudo-command "ALL", that user could execute arbitrary commands with sudo by creating symbolic links at a certain time.

Please note that this does not affect a standard Ubuntu installation.