Vulnerability Details : CVE-2011-4063
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.
Vulnerability category: Input validationDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2011-4063
Probability of exploitation activity in the next 30 days: 96.55%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-4063
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:C |
8.0
|
6.9
|
NIST |
CWE ids for CVE-2011-4063
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-4063
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http://downloads.digium.com/pub/security/AST-2011-012.html
AST-2011-012Vendor Advisory
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http://securityreason.com/securityalert/8478
astersik open source 1.8.7 Remote crash vulnerability - CXSecurity.com
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http://www.securityfocus.com/archive/1/520141/100/0/threaded
SecurityFocus
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http://www.securitytracker.com/id?1026191
Asterisk SIP Channel Driver Uninitialized Variable Access Bug Lets Remote Users Deny Service - SecurityTracker
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https://exchange.xforce.ibmcloud.com/vulnerabilities/70706
Asterisk SIP channel driver denial of service CVE-2011-4063 Vulnerability Report
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http://www.securityfocus.com/bid/50177
Asterisk Uninitalized Variable SIP Channel Driver Denial of Service Vulnerability
Products affected by CVE-2011-4063
- cpe:2.3:a:asterisk:open_source:1.8.7:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:10.0.0:*:*:*:*:*:*:*