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Last updated: 7/30/2014 1:10:25 AM

CVE Publication rate: 21.3

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Vulnerability Workload Index: 7.8
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National Cyber Awareness System

Vulnerability Summary for CVE-2010-0685

Original release date: 02/23/2010
Last revised: 04/08/2010
Source: US-CERT/NIST

Overview

The design of the dialplan functionality in Asterisk Open Source 1.2.x, 1.4.x, and 1.6.x; and Asterisk Business Edition B.x.x and C.x.x, when using the ${EXTEN} channel variable and wildcard pattern matches, allows context-dependent attackers to inject strings into the dialplan using metacharacters that are injected when the variable is expanded, as demonstrated using the Dial application to process a crafted SIP INVITE message that adds an unintended outgoing channel leg. NOTE: it could be argued that this is not a vulnerability in Asterisk, but a class of vulnerabilities that can occur in any program that uses this feature without the associated filtering functionality that is already available.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

References to Advisories, Solutions, and Tools

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External Source: FEDORA
Name: FEDORA-2010-3724
External Source: CONFIRM
Name: http://downloads.digium.com/pub/security/AST-2010-002.html
Type: Advisory; Exploit
External Source: XF
Name: asterisk-dial-weak-security(56397)
External Source: SECUNIA
Name: 39096
External Source: VUPEN
Name: ADV-2010-0439
Type: Advisory
External Source: BUGTRAQ
Name: 20100218 AST-2010-002: Dialplan injection vulnerability
External Source: SECUNIA
Name: 38641
Type: Advisory
External Source: MISC
Name: http://svn.asterisk.org/svn/asterisk/branches/1.2/README-SERIOUSLY.bestpractices.txt
External Source: SECTRACK
Name: 1023637

Vulnerable software and versions

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Collapse Configuration 1Configuration 1
Collapse OROR
* cpe:/a:digium:asterisk:b.1.3.2:-:business
* cpe:/a:digium:asterisk:b.1.3.3:-:business
* cpe:/a:digium:asterisk:b.2.2.1:-:business
* cpe:/a:digium:asterisk:b.2.2.0:-:business
* cpe:/a:digium:asterisk:b.2.3.2:-:business
* cpe:/a:digium:asterisk:b.2.3.1:-:business
* cpe:/a:digium:asterisk:b.2.3.4:-:business
* cpe:/a:digium:asterisk:b.2.3.3:-:business
* cpe:/a:digium:asterisk:b.2.3.6:-:business
* cpe:/a:digium:asterisk:b.2.3.5:-:business
* cpe:/a:digium:asterisk:b.2.5.1:-:business
* cpe:/a:digium:asterisk:b.2.5.0:-:business
* cpe:/a:digium:asterisk:b.2.5.2:-:business
* cpe:/a:digium:asterisk:b.2.5.3:-:business
* cpe:/a:digium:asterisk:c.3.0:-:business
* cpe:/a:digium:asterisk:c.2.3:-:business
* cpe:/a:digium:asterisk:c.1.6:-:business
* cpe:/a:digium:asterisk:c.1.6.1:-:business
* cpe:/a:digium:asterisk:c.1.0:beta7:business
* cpe:/a:digium:asterisk:c.1.0:beta8:business
* cpe:/a:digium:asterisk:c.1.8.1:-:business
* cpe:/a:digium:asterisk:c.1.6.2:-:business
* cpe:/a:digium:asterisk:c.1.8.0:-:business
Collapse Configuration 2Configuration 2
Collapse OROR
* cpe:/a:digium:asterisk:1.2.0
* cpe:/a:digium:asterisk:1.2.1
* cpe:/a:digium:asterisk:1.2.10
* cpe:/a:digium:asterisk:1.2.11
* cpe:/a:digium:asterisk:1.2.12
* cpe:/a:digium:asterisk:1.2.13
* cpe:/a:digium:asterisk:1.2.14
* cpe:/a:digium:asterisk:1.2.15
* cpe:/a:digium:asterisk:1.2.16
* cpe:/a:digium:asterisk:1.2.17
* cpe:/a:digium:asterisk:1.2.18
* cpe:/a:digium:asterisk:1.2.19
* cpe:/a:digium:asterisk:1.2.2
* cpe:/a:digium:asterisk:1.2.20
* cpe:/a:digium:asterisk:1.2.21
* cpe:/a:digium:asterisk:1.2.22
* cpe:/a:digium:asterisk:1.2.23
* cpe:/a:digium:asterisk:1.2.24
* cpe:/a:digium:asterisk:1.2.25
* cpe:/a:digium:asterisk:1.2.26
* cpe:/a:digium:asterisk:1.2.27
* cpe:/a:digium:asterisk:1.2.28
* cpe:/a:digium:asterisk:1.2.29
* cpe:/a:digium:asterisk:1.2.3
* cpe:/a:digium:asterisk:1.2.30
* cpe:/a:digium:asterisk:1.2.31
* cpe:/a:digium:asterisk:1.2.32
* cpe:/a:digium:asterisk:1.2.33
* cpe:/a:digium:asterisk:1.2.34
* cpe:/a:digium:asterisk:1.2.35
* cpe:/a:digium:asterisk:1.2.36
* cpe:/a:digium:asterisk:1.2.6
* cpe:/a:digium:asterisk:1.2.7
* cpe:/a:digium:asterisk:1.2.8
* cpe:/a:digium:asterisk:1.2.9
* cpe:/a:digium:asterisk:1.4.0
* cpe:/a:digium:asterisk:1.4.1
* cpe:/a:digium:asterisk:1.4.10
* cpe:/a:digium:asterisk:1.4.11
* cpe:/a:digium:asterisk:1.4.12
* cpe:/a:digium:asterisk:1.4.13
* cpe:/a:digium:asterisk:1.4.14
* cpe:/a:digium:asterisk:1.4.15
* cpe:/a:digium:asterisk:1.4.16
* cpe:/a:digium:asterisk:1.4.17
* cpe:/a:digium:asterisk:1.4.18
* cpe:/a:digium:asterisk:1.4.19
* cpe:/a:digium:asterisk:1.4.2
* cpe:/a:digium:asterisk:1.4.20
* cpe:/a:digium:asterisk:1.4.21
* cpe:/a:digium:asterisk:1.4.22
* cpe:/a:digium:asterisk:1.4.23
* cpe:/a:digium:asterisk:1.4.24
* cpe:/a:digium:asterisk:1.4.25
* cpe:/a:digium:asterisk:1.4.26
* cpe:/a:digium:asterisk:1.4.27
* cpe:/a:digium:asterisk:1.4.3
* cpe:/a:digium:asterisk:1.4.4
* cpe:/a:digium:asterisk:1.4.5
* cpe:/a:digium:asterisk:1.4.6
* cpe:/a:digium:asterisk:1.4.7
* cpe:/a:digium:asterisk:1.4.8
* cpe:/a:digium:asterisk:1.4.9
* cpe:/a:digium:asterisk:1.6.0
* cpe:/a:digium:asterisk:1.6.1
* cpe:/a:digium:asterisk:1.2.0:beta1
* cpe:/a:digium:asterisk:1.2.0:beta2
* cpe:/a:digium:asterisk:1.2.0:rc1
* cpe:/a:digium:asterisk:1.2.17:netsec
* cpe:/a:digium:asterisk:1.2.18:netsec
* cpe:/a:digium:asterisk:1.2.13:netsec
* cpe:/a:digium:asterisk:1.2.15:netsec
* cpe:/a:digium:asterisk:1.2.16:netsec
* cpe:/a:digium:asterisk:1.2.20:netsec
* cpe:/a:digium:asterisk:1.2.21:netsec
* cpe:/a:digium:asterisk:1.2.21.1:netsec
* cpe:/a:digium:asterisk:1.2.22:netsec
* cpe:/a:digium:asterisk:1.2.19:netsec
* cpe:/a:digium:asterisk:1.2.21.1
* cpe:/a:digium:asterisk:1.2.2:netsec
* cpe:/a:digium:asterisk:1.2.11:netsec
* cpe:/a:digium:asterisk:1.2.10:netsec
* cpe:/a:digium:asterisk:1.2.12.1:netsec
* cpe:/a:digium:asterisk:1.2.12:netsec
* cpe:/a:digium:asterisk:1.2.0:rc2
* cpe:/a:digium:asterisk:1.2.31.1
* cpe:/a:digium:asterisk:1.2.30.3
* cpe:/a:digium:asterisk:1.2.30.4
* cpe:/a:digium:asterisk:1.2.30.1
* cpe:/a:digium:asterisk:1.2.30.2
* cpe:/a:digium:asterisk:1.2.3:netsec
* cpe:/a:digium:asterisk:1.2.26.1:netsec
* cpe:/a:digium:asterisk:1.2.26:netsec
* cpe:/a:digium:asterisk:1.2.25:netsec
* cpe:/a:digium:asterisk:1.2.24:netsec
* cpe:/a:digium:asterisk:1.2.12.1
* cpe:/a:digium:asterisk:1.2.23:netsec
* cpe:/a:digium:asterisk:1.2.28.1
* cpe:/a:digium:asterisk:1.2.26.2:netsec
* cpe:/a:digium:asterisk:1.2.26.2
* cpe:/a:digium:asterisk:1.2.26.1
cpe:/a:digium:asterisk:1.6.1.0
cpe:/a:digium:asterisk:1.6.2.0
* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

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