Executive Summary

Titledbus security update
NameDSA-4462First vendor Publication2019-06-13
VendorDebianLast vendor Modification2019-06-13
Severity (Vendor) N/ARevision1

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score3.6Attack RangeLocal
Cvss Impact Score4.9Attack ComplexityLow
Cvss Expoit Score3.9AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores


Joe Vennix discovered an authentication bypass vulnerability in dbus, an asynchronous inter-process communication system. The implementation of the DBUS_COOKIE_SHA1 authentication mechanism was susceptible to a symbolic link attack. A local attacker could take advantage of this flaw to bypass authentication and connect to a DBusServer with elevated privileges.

The standard system and session dbus-daemons in their default configuration are not affected by this vulnerability.

The vulnerability was addressed by upgrading dbus to a new upstream version 1.10.28 which includes additional fixes.

For the stable distribution (stretch), this problem has been fixed in version 1.10.28-0+deb9u1.

We recommend that you upgrade your dbus packages.

For the detailed security status of dbus please refer to its security tracker page at: https://security-tracker.debian.org/tracker/dbus

Original Source

Url : http://www.debian.org/security/2019/dsa-4462

CWE : Common Weakness Enumeration

100 %CWE-287Improper Authentication

CPE : Common Platform Enumeration


Alert History

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2019-06-14 00:19:33
  • First insertion