[asterisk-dev] Asterisk 13.37.1, 16.14.1, 17.8.1, 18.0.1 and 16.8-cert5 Now Available (Security)

[Asterisk Development Team]

The Asterisk Development Team would like to announce security releases for
Asterisk 13, 16, 17 and 18, and Certified Asterisk 16.8. The available releases
are released as versions 13.37.1, 16.14.1, 17.8.1, 18.0.1 and 16.8-cert5.

These releases are available for immediate download at

https://downloads.asterisk.org/pub/telephony/asterisk/releases
https://downloads.asterisk.org/pub/telephony/certified-asterisk/releases

The following security vulnerabilities were resolved in these versions:

* AST-2020-001: Remote crash in res_pjsip_session
  Upon receiving a new SIP Invite, Asterisk did not return the created dialog
  locked or referenced.

* AST-2020-002: Outbound INVITE loop on challenge with different nonce.
  If Asterisk is challenged on an outbound INVITE and the nonce is changed in
  each response, Asterisk will continually send INVITEs in a loop. This causes
  Asterisk to consume more and more memory since the transaction will never
  terminate (even if the call is hung up), ultimately leading to a restart or
  shutdown of Asterisk. Outbound authentication must be configured on the
  endpoint for this to occur.

For a full list of changes in the current releases, please see the ChangeLogs:

https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-13.37.1
https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-16.14.1
https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-17.8.1
https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-18.0.1
https://downloads.asterisk.org/pub/telephony/certified-asterisk/releases/ChangeLog-certified-16.8-cert5

The security advisories are available at:

https://downloads.asterisk.org/pub/security/AST-2020-001.pdf
https://downloads.asterisk.org/pub/security/AST-2020-002.pdf

Thank you for your continued support of Asterisk!
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