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Test ID:1.3.6.1.4.1.25623.1.0.70595
Category:FreeBSD Local Security Checks
Title:FreeBSD Ports: asterisk18
Summary:FreeBSD Ports: asterisk18
Description:The remote host is missing an update to the system
as announced in the referenced advisory.

The following packages are affected:
asterisk18
asterisk16

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.

CVE-2011-4598
channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21
and 1.8.x before 1.8.7.2, when automon is enabled, allows remote
attackers to cause a denial of service (NULL pointer dereference and
daemon crash) via a crafted sequence of SIP requests.

Solution:
Update your system with the appropriate patches or
software upgrades.

http://downloads.asterisk.org/pub/security/AST-2011-013.html
http://downloads.asterisk.org/pub/security/AST-2011-014.html
http://www.vuxml.org/freebsd/bb389137-21fb-11e1-89b4-001ec9578670.html

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4597
Bugtraq: 20111222 Exploit for Asterisk Security Advisory AST-2011-013 (Google Search)
http://archives.neohapsis.com/archives/bugtraq/2011-12/0151.html
http://openwall.com/lists/oss-security/2011/12/09/3
http://openwall.com/lists/oss-security/2011/12/09/4
http://lists.digium.com/pipermail/asterisk-dev/2011-November/052191.html
Debian Security Information: DSA-2367 (Google Search)
http://www.debian.org/security/2011/dsa-2367
http://osvdb.org/77597
http://secunia.com/advisories/47273
Common Vulnerability Exposure (CVE) ID: CVE-2011-4598
http://osvdb.org/77598
CopyrightCopyright (c) 2012 E-Soft Inc. http://www.securityspace.com

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