Executive Summary

Informations
Name CVE-2020-11934 First vendor Publication 2020-07-29
Vendor Cve Last vendor Modification 2020-08-05

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
Overall CVSS Score 5.9
Base Score 5.9 Environmental Score 5.9
impact SubScore 4 Temporal Score 5.9
Exploitabality Sub Score 1.5
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction Required
Scope Changed Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score 1.9 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11934

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-668 Exposure of Resource to Wrong Sphere

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 4

Sources (Detail)

Source Url
CONFIRM https://launchpad.net/bugs/1880085
https://ubuntu.com/USN-4424-1

Alert History

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0
1
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Date Informations
2020-08-06 00:22:58
  • Multiple Updates
2020-07-30 00:22:51
  • Multiple Updates
2020-07-29 21:23:12
  • First insertion