CVE-2009-2726

2009-08-1210:30:01

CWE-770

[email protected]

web.nvd.nist.gov

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

AI Score

6.3

Confidence

Low

EPSS

0.036

Percentile

91.7%

JSON

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.

Affected configurations

Nvd

Node

digiumasteriskRange<b.2.5.9business

digiumasteriskRangec.2.0–c.2.4.1business

digiumasteriskRangec.3.0–c.3.1business

Node

digiums800i_firmwareRange1.2.0–1.3.0.3

AND

digiums800iMatch-

Node

digiumasteriskRange1.2.0–1.2.34

digiumasteriskRange1.4.0–1.4.26.1

digiumasteriskRange1.6.0–1.6.0.12

digiumasteriskRange1.6.1–1.6.1.4

VendorProductVersionCPE
digiumasterisk*cpe:2.3:a:digium:asterisk:*:*:business:*:*:*:*:*
digiums800i_firmware*cpe:2.3:o:digium:s800i_firmware:*:*:*:*:*:*:*:*
digiums800i-cpe:2.3:h:digium:s800i:-:*:*:*:*:*:*:*
digiumasterisk*cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
digium	asterisk	*	cpe:2.3:a:digium:asterisk:::business:::::*
digium	s800i_firmware	*	cpe:2.3:o:digium:s800i_firmware::::::::
digium	s800i	-	cpe:2.3:h:digium:s800i:-:::::::*
digium	asterisk	*	cpe:2.3:a:digium:asterisk::::::::