CVE-2009-2726

2009-08-1210:30:01

Debian Security Bug Tracker

security-tracker.debian.org

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

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.

OSVersionArchitecturePackageVersionFilename
Debian11allasterisk< 1:1.6.2.0~dfsg~rc1-1asterisk_1:1.6.2.0~dfsg~rc1-1_all.deb
Debian999allasterisk< 1:1.6.2.0~dfsg~rc1-1asterisk_1:1.6.2.0~dfsg~rc1-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	11	all	asterisk	< 1:1.6.2.0~dfsg~rc1-1	asterisk_1:1.6.2.0~dfsg~rc1-1_all.deb
Debian	999	all	asterisk	< 1:1.6.2.0~dfsg~rc1-1	asterisk_1:1.6.2.0~dfsg~rc1-1_all.deb