Executive Summary

Summary
Title D-Bus: Authentication bypass
Informations
Name GLSA-201909-08 First vendor Publication 2019-09-08
Vendor Gentoo Last vendor Modification 2019-09-08
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:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 3.6 Attack Range Local
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

An authentication bypass was discovered in D-Bus.

Background

D-Bus is a message bus system which processes can use to talk to each other.

Description

It was discovered that a local attacker could manipulate symbolic links in their own home directory to bypass authentication and connect to a DBusServer with elevated privileges.

Impact

A local attacker can bypass authentication mechanisms and elevate privileges.

Workaround

There is no known workaround at this time.

Resolution

All D-Bus users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.12.16"

References

[ 1 ] CVE-2019-12749 : https://nvd.nist.gov/vuln/detail/CVE-2019-12749

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201909-08

Original Source

Url : http://security.gentoo.org/glsa/glsa-201909-08.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 125
Os 4

Alert History

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0
Date Informations
2019-09-08 21:18:55
  • First insertion