← Vulnerability feed

Vulnerability record · CVE-2013-2264 · published 1 April 2013

CVE-2013-2264: Asterisk open source information exposure vulnerability

Asterisk · Open Source

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.

5.0 CVSS 2.0 Medium EPSS 1.3% · top 31.7% CWE-200 · Information exposure
5.0CVSS 2.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

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.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://downloads.asterisk.org/pub/security/AST-2013-003.html Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-21013 Vendor Advisory
http://downloads.asterisk.org/pub/security/AST-2013-003.html Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-21013 Vendor Advisory

Track CVE-2013-2264 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-23608Teluu pjsip use after free vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 4.0%9.8CVE-2021-37706Teluu pjsip vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 4.6%9.1CVE-2022-21723Teluu pjsip out-of-bounds read vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 4.4%9.0CVE-2012-2186Asterisk open source vulnerabilityIncomplete blacklist vulnerability in main/manager.c in Asterisk Open Source 1.8.x before 1.8.15.1 and 10.x before 10.7.1, Certified Asterisk 1.8.11 …EPSS 3.6%8.8CVE-2024-42365Asterisk vulnerabilityAsterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-…EPSS 4.7%8.8CVE-2008-1332Asterisk permissions and access controls vulnerabilityUnspecified vulnerability in Asterisk Open Source 1.2.x before 1.2.27, 1.4.x before 1.4.18.1 and 1.4.19-rc3; Business Edition A.x.x, B.x.x before B.2…EPSS 2.3%7.8CVE-2009-2346Asterisk memory buffer overflow vulnerabilityThe IAX2 protocol implementation in Asterisk Open Source 1.2.x before 1.2.35, 1.4.x before 1.4.26.2, 1.6.0.x before 1.6.0.15, and 1.6.1.x before 1.6.…EPSS 2.6%7.8CVE-2008-3264Asterisk appliance developer kit improper authentication vulnerabilityThe FWDOWNL firmware-download implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B…EPSS 3.4%

Source: NIST National Vulnerability Database (record CVE-2013-2264), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.