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CVE-2011-4597

Status Candidate

Overview

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.

Related Files

SIP Username Enumerator For Asterisk
Posted Dec 23, 2011
Authored by Ben Williams

This Metasploit module exploits a SIP username enumeration vulnerability in Asterisk. Performs a REGISTER scan for numeric peer usernames having a nat setting different to global sip nat setting. Works even when alwaysauthreject=yes. For this exploit to work, the source port cannot be 5060.

tags | exploit
advisories | CVE-2011-4597
SHA-256 | 54da0d99e312b44be212dc5220e9ea0fef3a31a1f8a4b91a6f8f48f53c53ca09
Debian Security Advisory 2367-1
Posted Dec 19, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2367-1 - Several vulnerabilities have been discovered in Asterisk, an Open Source PBX and telephony toolkit.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2011-4597, CVE-2011-4598
SHA-256 | c775b80295c3642a135dbde3ae832771f511ca0cfd118f13568781aff541ad60
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