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GLSA
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Joined: 12 May 2004
Posts: 2226

PostPosted: Sun Sep 08, 2019 7:26 pm    Post subject: [ GLSA 201909-08 ] D-Bus Reply with quote

Gentoo Linux Security Advisory

Title: D-Bus: Authentication bypass (GLSA 201909-08)
Severity: normal
Exploitable: local
Date: 2019-09-08
Bug(s): #687900
ID: 201909-08

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.


Affected Packages

Package: sys-apps/dbus
Vulnerable: < 1.12.16
Unaffected: >= 1.12.16
Architectures: All supported architectures


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:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.12.16"
   


References

CVE-2019-12749
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