CVE-2011-4063: Input Validation
First published: Fri Oct 21 2011(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Asterisk | =10.0.0 | |
| Asterisk | =1.8.7 |
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Reference Links
- http://downloads.digium.com/pub/security/AST-2011-012.html
- http://www.securityfocus.com/bid/50177
- http://www.securitytracker.com/id?1026191
- http://secunia.com/advisories/46420
- http://securityreason.com/securityalert/8478
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70706
- http://www.securityfocus.com/archive/1/520141/100/0/threaded
Frequently Asked Questions
What is the severity of CVE-2011-4063?
CVE-2011-4063 has a high severity level as it can lead to a denial of service through a daemon crash.
How do I fix CVE-2011-4063?
To fix CVE-2011-4063, update Asterisk to version 1.8.7.1 or 10.0.0-rc1 or later.
What types of requests can exploit CVE-2011-4063?
CVE-2011-4063 can be exploited by sending malformed requests to the SIP channel driver.
Who is affected by CVE-2011-4063?
Users of Asterisk Open Source versions 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 are affected by CVE-2011-4063.
Is there a workaround for CVE-2011-4063?
There is no specific workaround for CVE-2011-4063; the recommended action is to upgrade to a patched version.
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- agent/softwarecombine
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- agent/software-canonical-lookup-request
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- vendor/asterisk
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- version/asterisk/10.0.0
- version/asterisk/1.8.7