Executive Summary

Summary
Title APT vulnerability
Informations
Name USN-1762-1 First vendor Publication 2013-03-14
Vendor Ubuntu Last vendor Modification 2013-03-14
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:N/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
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Detail

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

- Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 11.10

Summary:

An attacker could trick APT into installing altered packages.

Software Description: - apt: Advanced front-end for dpkg

Details:

Ansgar Burchardt discovered that APT incorrectly handled repositories that use InRelease files. The default Ubuntu repositories do not use InRelease files, so this issue only affected third-party repositories. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages.

This update corrects the issue by disabling InRelease file support completely.

Update instructions:

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

Ubuntu 12.10:
apt 0.9.7.5ubuntu5.4

Ubuntu 12.04 LTS:
apt 0.8.16~exp12ubuntu10.10

Ubuntu 11.10:
apt 0.8.16~exp5ubuntu13.7

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

References:
http://www.ubuntu.com/usn/usn-1762-1
CVE-2013-1051

Package Information:
https://launchpad.net/ubuntu/+source/apt/0.9.7.5ubuntu5.4
https://launchpad.net/ubuntu/+source/apt/0.8.16~exp12ubuntu10.10
https://launchpad.net/ubuntu/+source/apt/0.8.16~exp5ubuntu13.7

Original Source

Url : http://www.ubuntu.com/usn/USN-1762-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:17916
 
Oval ID: oval:org.mitre.oval:def:17916
Title: USN-1762-1 -- apt vulnerability
Description: An attacker could trick APT into installing altered packages.
Family: unix Class: patch
Reference(s): USN-1762-1
CVE-2013-1051
Version: 9
Platform(s): Ubuntu 12.10
Ubuntu 12.04
Ubuntu 11.10
Product(s): apt
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Os 3

Nessus® Vulnerability Scanner

Date Description
2013-03-15 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1762-1.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2014-02-17 12:01:41
  • Multiple Updates
2013-03-22 21:19:37
  • Multiple Updates
2013-03-21 21:19:22
  • Multiple Updates
2013-03-14 17:17:23
  • First insertion