Information disclosure in Digium Asterisk
CVE-2011-4597
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.
Vulnerability class: Information Disclosure
EPSS: 0.033 (87.1th percentile) — read the EPSS interpretation.
Affected products
- Digium Asterisk — versions 1.8.0, 1.8.1, 1.8.1.1
- N/a — versions n/a
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_OSVDB, vdb-entry)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
- secalert@redhat.com (x_refsource_SECUNIA, third-party-advisory)
- secalert@redhat.com (mailing-list, x_refsource_BUGTRAQ)
- secalert@redhat.com (vendor-advisory, x_refsource_DEBIAN)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)