CVE-2011-4597

Published Dec 15, 2011 CVSS 2.0 · 5.0 Medium EPSS 3.2% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-2367-1 asterisk security update
EUVD EUVD EUVD-2011-4521 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.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 7, 2024, 12:09 AM
Reserved
Nov 29, 2011, 12:00 AM
Status
Modified
Published
Dec 15, 2011, 3:57 AM
Modified
Jun 16, 2026, 11:35 PM