National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-2726)

National Cyber-Alert System

Vulnerability Summary for CVE-2009-2726

Original release date:08/12/2009

Last revised:08/18/2009

Source: US-CERT/NIST

Overview

The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; Asterisk Business Edition A.x.x, B.x.x before B.2.5.9, C.2.x before C.2.4.1, and C.3.x before C.3.1; and Asterisk Appliance s800i 1.2.x before 1.3.0.3 does not use a maximum width when invoking sscanf style functions, which allows remote attackers to cause a denial of service (stack memory consumption) via SIP packets containing large sequences of ASCII decimal characters, as demonstrated via vectors related to (1) the CSeq value in a SIP header, (2) large Content-Length value, and (3) SDP.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:7.8 (HIGH) (AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

References to Advisories, Solutions, and Tools

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External Source: VUPEN

Name: ADV-2009-2229

Type: Advisory

Hyperlink:http://www.vupen.com/english/advisories/2009/2229

External Source: SECTRACK

Name: 1022705

Hyperlink:http://www.securitytracker.com/id?1022705

External Source: BID

Name: 36015

Hyperlink:http://www.securityfocus.com/bid/36015

External Source: BUGTRAQ

Name: 20090811 AST-2009-005: Remote Crash Vulnerability in SIP channel driver

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/505669/100/0/threaded

External Source: SECUNIA

Name: 36227

Type: Advisory

Hyperlink:http://secunia.com/advisories/36227

External Source: MISC

Name: http://labs.mudynamics.com/advisories/MU-200908-01.txt

Hyperlink:http://labs.mudynamics.com/advisories/MU-200908-01.txt

External Source: CONFIRM

Name: http://downloads.digium.com/pub/security/AST-2009-005.html

Hyperlink:http://downloads.digium.com/pub/security/AST-2009-005.html

Vulnerable software and versions

Configuration 1

* cpe:/a:asterisk:open_source:1.2.0:beta1

* cpe:/a:asterisk:open_source:1.2.0:beta2

* cpe:/a:asterisk:open_source:1.2.0:rc1

* cpe:/a:asterisk:open_source:1.2.0:rc2

* cpe:/a:asterisk:open_source:1.2.1

* cpe:/a:asterisk:open_source:1.2.10

* cpe:/a:asterisk:open_source:1.2.10:netsec

* cpe:/a:asterisk:open_source:1.2.11

* cpe:/a:asterisk:open_source:1.2.11:netsec

* cpe:/a:asterisk:open_source:1.2.12

* cpe:/a:asterisk:open_source:1.2.12.1

* cpe:/a:asterisk:open_source:1.2.12.1:netsec

* cpe:/a:asterisk:open_source:1.2.12:netsec

* cpe:/a:asterisk:open_source:1.2.13

* cpe:/a:asterisk:open_source:1.2.13:netsec

* cpe:/a:asterisk:open_source:1.2.14:netsec

* cpe:/a:asterisk:open_source:1.2.15

* cpe:/a:asterisk:open_source:1.2.15:netsec

* cpe:/a:asterisk:open_source:1.2.16

* cpe:/a:asterisk:open_source:1.2.16:netsec

* cpe:/a:asterisk:open_source:1.2.17

* cpe:/a:asterisk:open_source:1.2.17:netsec

* cpe:/a:asterisk:open_source:1.2.18

* cpe:/a:asterisk:open_source:1.2.18:netsec

* cpe:/a:asterisk:open_source:1.2.19

* cpe:/a:asterisk:open_source:1.2.19:netsec

* cpe:/a:asterisk:open_source:1.2.2

* cpe:/a:asterisk:open_source:1.2.2:netsec

* cpe:/a:asterisk:open_source:1.2.20

* cpe:/a:asterisk:open_source:1.2.20:netsec

* cpe:/a:asterisk:open_source:1.2.21

* cpe:/a:asterisk:open_source:1.2.21.1

* cpe:/a:asterisk:open_source:1.2.21.1:netsec

* cpe:/a:asterisk:open_source:1.2.21:netsec

* cpe:/a:asterisk:open_source:1.2.22

* cpe:/a:asterisk:open_source:1.2.22:netsec

* cpe:/a:asterisk:open_source:1.2.23

* cpe:/a:asterisk:open_source:1.2.23:netsec

* cpe:/a:asterisk:open_source:1.2.24

* cpe:/a:asterisk:open_source:1.2.24:netsec

* cpe:/a:asterisk:open_source:1.2.25

* cpe:/a:asterisk:open_source:1.2.25:netsec

* cpe:/a:asterisk:open_source:1.2.26

* cpe:/a:asterisk:open_source:1.2.26.1

* cpe:/a:asterisk:open_source:1.2.26.1:netsec

* cpe:/a:asterisk:open_source:1.2.26.2

* cpe:/a:asterisk:open_source:1.2.26.2:netsec

* cpe:/a:asterisk:open_source:1.2.26:netsec

* cpe:/a:asterisk:open_source:1.2.27

* cpe:/a:asterisk:open_source:1.2.28

* cpe:/a:asterisk:open_source:1.2.29

* cpe:/a:asterisk:open_source:1.2.3

* cpe:/a:asterisk:open_source:1.2.3:netsec

* cpe:/a:asterisk:open_source:1.2.30

* cpe:/a:asterisk:open_source:1.2.30.2

* cpe:/a:asterisk:open_source:1.2.30.3

* cpe:/a:asterisk:open_source:1.2.30.4

* cpe:/a:asterisk:open_source:1.2.4

* cpe:/a:asterisk:open_source:1.2.4:netsec

* cpe:/a:asterisk:open_source:1.2.5

* cpe:/a:asterisk:open_source:1.2.5:netsec

* cpe:/a:asterisk:open_source:1.2.6

* cpe:/a:asterisk:open_source:1.2.6:netsec

* cpe:/a:asterisk:open_source:1.2.7

* cpe:/a:asterisk:open_source:1.2.7.1

* cpe:/a:asterisk:open_source:1.2.7.1:netsec

* cpe:/a:asterisk:open_source:1.2.7:netsec

* cpe:/a:asterisk:open_source:1.2.8

* cpe:/a:asterisk:open_source:1.2.8:netsec

* cpe:/a:asterisk:open_source:1.2.9.1

* cpe:/a:asterisk:open_source:1.2.9.1:netsec

* cpe:/a:asterisk:open_source:1.4.15

* cpe:/a:asterisk:open_source:1.4.14

* cpe:/a:asterisk:open_source:1.4.13

* cpe:/a:asterisk:open_source:1.4.12

* cpe:/a:asterisk:open_source:1.4.18

* cpe:/a:asterisk:open_source:1.4.11

* cpe:/a:asterisk:open_source:1.4.0:beta4

* cpe:/a:asterisk:open_source:1.4.10

* cpe:/a:asterisk:open_source:1.4.19:rc4

* cpe:/a:asterisk:open_source:1.4.0:beta3

* cpe:/a:asterisk:open_source:1.4.19:rc3

* cpe:/a:asterisk:open_source:1.4.19:rc1

* cpe:/a:asterisk:open_source:1.4.0:beta2

* cpe:/a:asterisk:open_source:1.4.1

* cpe:/a:asterisk:open_source:1.4.22

* cpe:/a:asterisk:open_source:1.4.2

* cpe:/a:asterisk:open_source:1.4.16

* cpe:/a:asterisk:open_source:1.4.22.1

* cpe:/a:asterisk:open_source:1.4.21:rc1

* cpe:/a:asterisk:open_source:1.4.21:rc2

* cpe:/a:asterisk:open_source:1.4.19.1

* cpe:/a:asterisk:open_source:1.4.21.1

* cpe:/a:asterisk:open_source:1.4.19:rc2

* cpe:/a:asterisk:open_source:1.4.21.2

* cpe:/a:asterisk:open_source:1.4.20:rc1

* cpe:/a:asterisk:open_source:1.4.20:rc2

* cpe:/a:asterisk:open_source:1.4.20:rc3

* cpe:/a:asterisk:open_source:1.4.21

* cpe:/a:asterisk:open_source:1.4.20

* cpe:/a:asterisk:open_source:1.4.18.1

* cpe:/a:asterisk:open_source:1.4.19.2

* cpe:/a:asterisk:open_source:1.4.17

* cpe:/a:asterisk:open_source:1.4.19_rc3

* cpe:/a:asterisk:open_source:1.4.19:rc-2

* cpe:/a:asterisk:open_source:1.4.0

* cpe:/a:asterisk:open_source:1.4.19

* cpe:/a:asterisk:open_source:1.4.10.1

* cpe:/a:asterisk:open_source:1.4.12.1

* cpe:/a:asterisk:open_source:1.4.16.1

* cpe:/a:asterisk:open_source:1.4.16.2

* cpe:/a:asterisk:open_source:1.4.23:rc3

* cpe:/a:asterisk:open_source:1.4.9

* cpe:/a:asterisk:open_source:1.4.8

* cpe:/a:asterisk:open_source:1.4.7

* cpe:/a:asterisk:open_source:1.4.22.2

* cpe:/a:asterisk:open_source:1.4.5

* cpe:/a:asterisk:open_source:1.4.23

* cpe:/a:asterisk:open_source:1.4.6

* cpe:/a:asterisk:open_source:1.4.23:rc1

* cpe:/a:asterisk:open_source:1.4.3

* cpe:/a:asterisk:open_source:1.4.23:rc2

* cpe:/a:asterisk:open_source:1.4.4

* cpe:/a:asterisk:open_source:1.4.22:rc3

* cpe:/a:asterisk:open_source:1.4.22:rc4

* cpe:/a:asterisk:open_source:1.4.7.1

* cpe:/a:asterisk:opensource:1.4.22

* cpe:/a:asterisk:opensource:1.4.23.1

* cpe:/a:asterisk:opensource:1.4.23

* cpe:/a:asterisk:open_source:1.6.0:beta2

* cpe:/a:asterisk:open_source:1.6.0:beta1

* cpe:/a:asterisk:open_source:1.6.0:beta4

* cpe:/a:asterisk:open_source:1.6.0:beta3

* cpe:/a:asterisk:open_source:1.6.0.2

* cpe:/a:asterisk:open_source:1.6.0.1

* cpe:/a:asterisk:open_source:1.6.0.3:rc1

* cpe:/a:asterisk:open_source:1.6.0.3

* cpe:/a:asterisk:open_source:1.6.0:rc4

* cpe:/a:asterisk:open_source:1.6.0:beta9

* cpe:/a:asterisk:open_source:1.6.0:rc6

* cpe:/a:asterisk:open_source:1.6.0:rc5

* cpe:/a:asterisk:open_source:1.6.0:beta7

* cpe:/a:asterisk:open_source:1.6.0:beta8

* cpe:/a:asterisk:open_source:1.6.0:beta7.1

* cpe:/a:asterisk:open_source:1.6.0:beta5

* cpe:/a:asterisk:open_source:1.4beta

* cpe:/a:asterisk:open_source:1.6.1

* cpe:/a:asterisk:business_edition:c.2.3

* cpe:/a:asterisk:business_edition:b.1.3.2

* cpe:/a:asterisk:business_edition:c.3.0

* cpe:/a:asterisk:open_source:1.2.0

* cpe:/h:asterisk:appliance_s800i:1.3.0.2

* Denotes Vulnerable Software

Technical Details

Vulnerability Type (View All)

Resource Management Errors (CWE-399)

CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2726