National Cyber Awareness System
Vulnerability Summary for CVE-2011-1175
Original release date:03/31/2011
Last revised:08/24/2011
Source:
US-CERT/NIST
Overview
tcptls.c in the TCP/TLS server in Asterisk Open Source 1.6.1.x before 1.6.1.23, 1.6.2.x before 1.6.2.17.1, and 1.8.x before 1.8.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by establishing many short TCP sessions to services that use a certain TLS API.
Description
Per: http://cwe.mitre.org/data/definitions/476.html
'CWE-476: NULL Pointer Dereference'
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [oss-security] 20110321 Re: CVE request for Asterisk flaws
Type: Patch Information
External Source: FEDORA
Name: FEDORA-2011-3958
Type: Patch Information
External Source: CONFIRM
Name: http://downloads.asterisk.org/pub/security/AST-2011-004.html
Type: Advisory; Patch Information
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=688678
External Source: XF
Name: asterisk-handletcptlsconnection-dos(66140)
External Source: VUPEN
Name: ADV-2011-0790
Type: Advisory
External Source: VUPEN
Name: ADV-2011-0686
Type: Advisory
External Source: BID
Name: 46898
External Source: DEBIAN
Name: DSA-2225
External Source: SECTRACK
Name: 1025224
External Source: MLIST
Name: [oss-security] 20110317 CVE request for Asterisk flaws
External Source: FEDORA
Name: FEDORA-2011-3942
External Source: FEDORA
Name: FEDORA-2011-3945