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CVE-2008-1897

Published: Apr 23, 2008Updated: Apr 23, 2026 Sources: CVE List NVDCWE-287
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
2.7%
Top 15.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.

CVSS Vector Breakdown

AV:NAC:MAu:NC:NI:NA:P
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:PAvailability
Partial
Open in CVSS calculator →

Weaknesses

CWE-287

Affected Products

asterisk appliance developer kitasterisk
On-prem
Communications / voip-telephony
asterisk business editionasterisk
On-prem
Communications / voip-telephony
asterisknowasterisk
On-prem
Communications / voip-telephony
open sourceasterisk
On-premWeb App
Communications / voip-telephony
s800iasterisk
On-prem
Communications / voip-telephony
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit
and 1 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

http://bugs.digium.com/view.php?id=10078
bugs.digium.com
http://downloads.digium.com/pub/security/AST-2008-006.html
downloads.digium.com
http://secunia.com/advisories/29927
secunia.com
and 24 more references View all →

Timeline

Published
Apr 23, 2008
Last Updated
Apr 23, 2026

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