Unscored severity · published Aug 12, 2009
CVE-2009-2726
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,…
–
CVSS
6.5%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)6.5% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
before b.2.5.9; c.2.0 through c.2.4.1; c.3.0 before c.3.1; 1.2.0 before 1.2.34; 1.4.0 before 1.4.26.1; 1.6.0 before 1.6.0.12; +1 more · source: NVD
SF
S800i Firmware · Digium
1.2.0 before 1.3.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2009-2726
CVE.org
https://www.cve.org/CVERecord?id=CVE-2009-2726
Product
http://downloads.digium.com/pub/security/AST-2009-005.html
Broken Link
http://labs.mudynamics.com/advisories/MU-200908-01.txt
Broken Link
http://secunia.com/advisories/36227
Broken Link
http://www.securityfocus.com/archive/1/505669/100/0/threaded
Broken Link
http://www.securityfocus.com/bid/36015
Broken Link
http://www.securitytracker.com/id?1022705
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