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CVE-2013-2264

Published: Mar 29, 2013Updated: Apr 29, 2026 Sources: CVE List NVDCWE-200
NVD MITRE
5.0CVSSMEDIUM
EPSS Score
1.3%
Top 34.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur.

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
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Weaknesses

CWE-200

Affected Products

n/an/a
open sourceasterisk
On-premWeb App
Communications / voip-telephony
certified asteriskasterisk
On-prem
Communications / voip-telephony
business editionasterisk
On-prem
Communications / voip-telephony
digiumphonesasterisk
On-prem
Communications / voip-telephony
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.asterisk.org/pub/security/AST-2013-003.html
downloads.asterisk.org
https://issues.asterisk.org/jira/browse/ASTERISK-21013
issues.asterisk.org

Timeline

Published
Mar 29, 2013
Last Updated
Apr 29, 2026

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