Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Sudo vulnerability
Informations
Name USN-4263-2 First vendor Publication 2020-02-05
Vendor Ubuntu Last vendor Modification 2020-02-05
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.6 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM - Ubuntu 12.04 ESM

Summary:

Sudo could allow unintended access to the administrator account.

Software Description: - sudo: Provide limited super user privileges to specific users

Details:

USN-4263-1 fixed a vulnerability in Sudo. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Joe Vennix discovered that Sudo incorrectly handled memory operations when
the pwfeedback option is enabled. A local attacker could possibly use this
issue to obtain unintended access to the administrator account.

Update instructions:

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

Ubuntu 14.04 ESM:
sudo 1.8.9p5-1ubuntu1.5+esm3
sudo-ldap 1.8.9p5-1ubuntu1.5+esm3

Ubuntu 12.04 ESM:
sudo 1.8.3p1-1ubuntu3.9
sudo-ldap 1.8.3p1-1ubuntu3.9

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

References:
https://usn.ubuntu.com/4263-2
https://usn.ubuntu.com/4263-1
CVE-2019-18634

Original Source

Url : http://www.ubuntu.com/usn/USN-4263-2

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 68
Os 3

Alert History

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0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-02-05 17:17:53
  • First insertion