Executive Summary

Summary
Title D-Bus vulnerability
Informations
NameUSN-799-1First vendor Publication2009-07-13
VendorUbuntuLast vendor Modification2009-07-13
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

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

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 6.06 LTS
Ubuntu 8.04 LTS
Ubuntu 8.10
Ubuntu 9.04

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

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

Ubuntu 6.06 LTS:
libdbus-1-2 0.60-6ubuntu8.4

Ubuntu 8.04 LTS:
libdbus-1-3 1.1.20-1ubuntu3.3

Ubuntu 8.10:
libdbus-1-3 1.2.4-0ubuntu1.1

Ubuntu 9.04:
libdbus-1-3 1.2.12-0ubuntu2.1

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

Details follow:

It was discovered that the D-Bus library did not correctly validate
signatures. If a local user sent a specially crafted D-Bus key, they could
spoof a valid signature and bypass security policies.


Original Source

Url : http://www.ubuntu.com/usn/USN-799-1

CWE : Common Weakness Enumeration

idName
CWE-20Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10308
 
Oval ID: oval:org.mitre.oval:def:10308
Title: The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to validate a basic type, which allows remote attackers to spoof a signature via a crafted key. NOTE: this is due to an incorrect fix for CVE-2008-3834.
Description: The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to validate a basic type, which allows remote attackers to spoof a signature via a crafted key. NOTE: this is due to an incorrect fix for CVE-2008-3834.
Family: unix Class: vulnerability
Reference(s): CVE-2009-1189
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application49

Open Source Vulnerability Database (OSVDB)

idDescription
56165D-Bus dbus-marshal-validate.c _dbus_validate_signature_with_reason Function C...

Alert History

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0
DateInformations
2013-05-11 00:56:05
  • Multiple Updates