The Asterisk Development Team has announced the releases of Asterisk 1.6.1.8. This release is available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk/ The release of 1.6.1.8 resolves an issue where an ACL check is not present for verifying SIP INVITEs. For more information about the details of this vulnerability, please read the security advisory AST-2009-007, which was released at the same time as this announcement. The Asterisk 1.6.1 series is the only fully released version which contains this vulnerability. Releases from previous branches (1.6.0, 1.4, 1.2) are not affected. In addition, Asterisk users may notice that we skipped the version number 1.6.1.7. This was intentional, in an effort to avoid confusion about what a particular release contains. Asterisk 1.6.1.7 had candidates for release made, so backtracking on those changes in a release with the same version number might be confusing. The next release candidate, which would have been 1.6.1.7-rc3, will be released with additional changes as 1.6.1.9-rc1. For a full list of changes in the current release, please see the ChangeLog: http://downloads.asterisk.org/pub/telephony/asterisk/ChangeLog-1.6.1.8 Release announcement AST-2009-007 is available at: http://downloads.asterisk.org/pub/security/AST-2009-007.pdf Thank you for your continued support of Asterisk!