PT-2009-5109 · Digium · Asterisk Appliance+2

Published 2009-08-12 · Updated 2024-02-15 · CVE-2009-2726

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Asterisk Open Source versions 1.2.x through 1.2.33 Asterisk Open Source versions 1.4.x through 1.4.26 Asterisk Open Source versions 1.6.0.x through 1.6.0.11 Asterisk Open Source versions 1.6.1.x through 1.6.1.3 Asterisk Business Edition A.x.x Asterisk Business Edition B.x.x through B.2.5.8 Asterisk Business Edition C.2.x through C.2.4.0 Asterisk Business Edition C.3.x through C.3.0 Asterisk Appliance s800i versions 1.2.x through 1.2.x before 1.3.0.3

Description The issue allows remote attackers to cause a denial of service via SIP packets containing large sequences of ASCII decimal characters. This can be achieved through vectors related to the CSeq value in a SIP header, large Content-Length value, and SDP.

Recommendations For Asterisk Open Source versions 1.2.x through 1.2.33, update to version 1.2.34 or later. For Asterisk Open Source versions 1.4.x through 1.4.26, update to version 1.4.26.1 or later. For Asterisk Open Source versions 1.6.0.x through 1.6.0.11, update to version 1.6.0.12 or later. For Asterisk Open Source versions 1.6.1.x through 1.6.1.3, update to version 1.6.1.4 or later. For Asterisk Business Edition A.x.x, B.x.x through B.2.5.8, C.2.x through C.2.4.0, and C.3.x through C.3.0, update to the respective fixed versions B.2.5.9, C.2.4.1, and C.3.1. For Asterisk Appliance s800i versions 1.2.x through 1.2.x before 1.3.0.3, update to version 1.3.0.3 or later.

Exploit

Fix

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2009-2726

Affected Products

Asterisk Appliance

Asterisk Business Edition

Asterisk Open Source

References · 12

• 🔥 http://securityfocus.com/bid/36015 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2009-2726 · Vendor Advisory
• http://secunia.com/advisories/36227 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2009-2726 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2009-2726 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2009-2726 · Vendor Advisory
• http://vupen.com/english/advisories/2009/2229 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2726 · Note
• http://securityfocus.com/archive/1/505669/100/0/threaded · Note
• http://labs.mudynamics.com/advisories/MU-200908-01.txt · Note
• http://securitytracker.com/id?1022705 · Note
• http://downloads.digium.com/pub/security/AST-2009-005.html · Note