Executive Summary

Informations
NameCVE-2011-0495First vendor Publication2011-01-20
VendorCveLast vendor Modification2018-10-09

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:P/I:P/A:P)
Cvss Base Score6Attack RangeNetwork
Cvss Impact Score6.4Attack ComplexityMedium
Cvss Expoit Score6.8AuthenticationRequires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0495

CWE : Common Weakness Enumeration

%idName
100 %CWE-119Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:12470
 
Oval ID: oval:org.mitre.oval:def:12470
Title: DSA-2171-1 asterisk -- buffer overflow
Description: Matthew Nicholson discovered a buffer overflow in the SIP channel driver of Asterisk, an open source PBX and telephony toolkit, which could lead to the execution of arbitrary code.
Family: unix Class: patch
Reference(s): DSA-2171-1
CVE-2011-0495
Version: 5
Platform(s): Debian GNU/Linux 5.0
Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): asterisk
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application237

OpenVAS Exploits

DateDescription
2011-03-09Name : Debian Security Advisory DSA 2171-1 (asterisk)
File : nvt/deb_2171_1.nasl
2011-02-04Name : Fedora Update for asterisk FEDORA-2011-0774
File : nvt/gb_fedora_2011_0774_asterisk_fc14.nasl
2011-02-04Name : Fedora Update for asterisk FEDORA-2011-0794
File : nvt/gb_fedora_2011_0794_asterisk_fc13.nasl

Open Source Vulnerability Database (OSVDB)

idDescription
70518Asterisk main/utils.c ast_uri_encode() Function Caller ID Information Overflow

Nessus® Vulnerability Scanner

DateDescription
2011-02-22Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2171.nasl - Type : ACT_GATHER_INFO
2011-02-04Name : The remote Fedora host is missing a security update.
File : fedora_2011-0774.nasl - Type : ACT_GATHER_INFO
2011-02-04Name : The remote Fedora host is missing a security update.
File : fedora_2011-0794.nasl - Type : ACT_GATHER_INFO
2011-01-21Name : A telephony application running on the remote host is affected by a buffer ov...
File : asterisk_ast_2011_001.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

SourceUrl
BID http://www.securityfocus.com/bid/45839
BUGTRAQ http://www.securityfocus.com/archive/1/515781/100/0/threaded
CONFIRM http://downloads.asterisk.org/pub/security/AST-2011-001.html
DEBIAN http://www.debian.org/security/2011/dsa-2171
FEDORA http://lists.fedoraproject.org/pipermail/package-announce/2011-February/05368...
http://lists.fedoraproject.org/pipermail/package-announce/2011-February/05371...
MISC http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diff
VUPEN http://www.vupen.com/english/advisories/2011/0159
http://www.vupen.com/english/advisories/2011/0281
http://www.vupen.com/english/advisories/2011/0449
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/64831

Alert History

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DateInformations
2018-10-10 00:19:40
  • Multiple Updates
2017-08-17 09:23:16
  • Multiple Updates
2016-06-28 18:31:38
  • Multiple Updates
2016-04-26 20:30:56
  • Multiple Updates
2014-02-17 11:00:07
  • Multiple Updates
2013-05-10 22:53:52
  • Multiple Updates