AST-2009-007: ACL not respected on SIP INVITE

           Asterisk Project Security Advisory - AST-2009-007

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| Product | Asterisk |
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| Summary | ACL not respected on SIP INVITE |
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| Nature of Advisory | Unauthorized calls allowed on prohibited networks |
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| Susceptibility | Remote unauthorized session |
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| Severity | Critical |
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| Exploits Known | No |
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| Reported On | October 18, 2009 |
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| Reported By | Thomas Athineou <thom_winkler AT web DOT de> |
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| Posted On | October 26, 2009 |
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| Last Updated On | October 26, 2009 |
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| Advisory Contact | Jeff Peeler <jpeeler AT digium DOT com> |
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| CVE Name | |
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| Description | A missing ACL check for handling SIP INVITEs allows a |
| | device to make calls on networks intended to be |
| | prohibited as defined by the "deny" and "permit" lines |
| | in sip.conf. The ACL check for handling SIP |
| | registrations was not affected. |
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| Resolution | Users should upgrade to a version listed in the |
| | "Corrected In" section below. |
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| Links | |
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| Asterisk Project Security Advisories are posted at |
| http://www.asterisk.org/security |
| |
| This document may be superseded by later versions; if so, the latest |
| version will be posted at |
| http://downloads.digium.com/pub/security/AST-2009-007.pdf and |
| http://downloads.digium.com/pub/security/AST-2009-007.html |
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           Asterisk Project Security Advisory - AST-2009-007
          Copyright (c) 2009 Digium, Inc. All Rights Reserved.

Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.