CVE-2009-2726 | Date: (C)2009-08-12 (M)2024-02-23 |
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.
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V2 Severity: |
CVSS Score : 7.8 |
Exploit Score: 10.0 |
Impact Score: 6.9 |
|
CVSS V2 Metrics: |
Access Vector: NETWORK |
Access Complexity: LOW |
Authentication: NONE |
Confidentiality: NONE |
Integrity: NONE |
Availability: COMPLETE |
| |