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.
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Affected Vendors & Products
References
History
No history.

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-07T05:59:57.107Z
Reserved: 2009-08-10T00:00:00
Link: CVE-2009-2726

No data.

Status : Deferred
Published: 2009-08-12T10:30:01.110
Modified: 2025-04-09T00:30:58.490
Link: CVE-2009-2726

No data.