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CVE-2009-0041

Published: Jan 14, 2009Updated: Apr 23, 2026 Sources: CVE List NVDCWE-200
NVD MITRE
5.0CVSSMEDIUM
EPSS Score
2.7%
Top 15.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x before B.2.5.7, C.1.x.x before C.1.10.4, and C.2.x.x before C.2.1.2.1; and s800i 1.2.x before 1.3.0 responds differently to a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.

CVSS Vector Breakdown

AV:NAC:LAu:NC:PI:NA:N
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-200

Affected Products

asterisk business editionasterisk
On-prem
Communications / voip-telephony
open sourceasterisk
On-premWeb App
Communications / voip-telephony
s800i applianceasterisk
On-prem
Communications / voip-telephony
n/an/a
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

http://downloads.digium.com/pub/security/AST-2009-001.html
downloads.digium.com
http://secunia.com/advisories/33453
secunia.com
http://secunia.com/advisories/34982
secunia.com
and 8 more references View all →

Timeline

Published
Jan 14, 2009
Last Updated
Apr 23, 2026

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