CVE-2011-4597

N/A Unknown
Published: December 15, 2011 Modified: April 29, 2026
View on NVD

Description

The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series of requests.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.html
Source: secalert@redhat.com
http://downloads.asterisk.org/pub/security/AST-2011-013.html
Source: secalert@redhat.com
http://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.html
Source: secalert@redhat.com
http://openwall.com/lists/oss-security/2011/12/09/3
Source: secalert@redhat.com
http://openwall.com/lists/oss-security/2011/12/09/4
Source: secalert@redhat.com
http://osvdb.org/77597
Source: secalert@redhat.com
http://secunia.com/advisories/47273
Source: secalert@redhat.com
http://www.debian.org/security/2011/dsa-2367
Source: secalert@redhat.com
http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://downloads.asterisk.org/pub/security/AST-2011-013.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://openwall.com/lists/oss-security/2011/12/09/3
Source: af854a3a-2127-422b-91ae-364da2661108
http://openwall.com/lists/oss-security/2011/12/09/4
Source: af854a3a-2127-422b-91ae-364da2661108
http://osvdb.org/77597
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/47273
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2011/dsa-2367
Source: af854a3a-2127-422b-91ae-364da2661108

16 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
3.3%
87th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-200

Affected Vendors

digium

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