Executive Summary

Informations
NameCVE-2011-2666First vendor Publication2011-07-06
VendorCveLast vendor Modification2017-08-28

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score5Attack RangeNetwork
Cvss Impact Score2.9Attack ComplexityLow
Cvss Expoit Score10AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2666

CWE : Common Weakness Enumeration

%idName
100 %CWE-16Configuration

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:18445
 
Oval ID: oval:org.mitre.oval:def:18445
Title: DSA-2493-1 asterisk - denial of service
Description: Several vulnerabilities were discovered in Asterisk, a PBX and telephony toolkit.
Family: unix Class: patch
Reference(s): DSA-2493-1
CVE-2012-2947
CVE-2012-2948
CVE-2011-2666
Version: 5
Platform(s): Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): asterisk
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application158

OpenVAS Exploits

DateDescription
2012-08-10Name : Debian Security Advisory DSA 2493-1 (asterisk)
File : nvt/deb_2493_1.nasl
2012-02-12Name : Gentoo Security Advisory GLSA 201110-21 (Asterisk)
File : nvt/glsa_201110_21.nasl

Open Source Vulnerability Database (OSVDB)

idDescription
74352Asterisk SIP Channel Driver Default Configuration Invalid SIP Request Usernam...

Nessus® Vulnerability Scanner

DateDescription
2012-06-29Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2493.nasl - Type : ACT_GATHER_INFO
2011-11-22Name : A telephony application running on the remote host is affected by an informat...
File : asterisk_ast_2011_011.nasl - Type : ACT_GATHER_INFO
2011-10-25Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201110-21.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

SourceUrl
CONFIRM http://downloads.asterisk.org/pub/security/AST-2011-011.html
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/68472

Alert History

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DateInformations
2017-08-29 09:23:18
  • Multiple Updates
2016-04-26 20:53:03
  • Multiple Updates
2014-02-17 11:03:33
  • Multiple Updates
2013-05-10 23:03:35
  • Multiple Updates