CVE-2011-2536

Published Jul 6, 2011 CVSS 2.0 · 5.0 Medium EPSS 1.9% KEV · Not listed
Description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2011-2519 chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.
History

No history.

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 6, 2024, 11:08 PM
Reserved
Jun 27, 2011, 12:00 AM
Status
Modified
Published
Jul 6, 2011, 7:55 PM
Modified
Jun 16, 2026, 11:31 PM