==================================================================== CERT-Renater Note d'Information No. 2018/VULN206 _____________________________________________________________________ DATE : 12/06/2018 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Asterisk Open Source versions prior to 13.21.1, 14.7.7, 15.4.1, Certified Asterisk versions prior to 13.18-cert4, 13.21-cert2 . ===================================================================== http://downloads.asterisk.org/pub/security/AST-2018-007.html http://downloads.asterisk.org/pub/security/AST-2018-008.html _____________________________________________________________________ Asterisk Project Security Advisory - AST-2018-007 Product Asterisk Summary Infinite loop when reading iostreams Nature of Advisory Denial of Service Susceptibility Remote Authenticated Sessions Severity Critical Exploits Known No Reported On April 16, 2018 Reported By Sean Bright Posted On June 11, 2018 Last Updated On June 12, 2018 Advisory Contact Kevin Harwell <kharwell AT digium DOT com> CVE Name CVE-2018-12228 Description When connected to Asterisk via TCP/TLS if the client abruptly disconnects, or sends a specially crafted message then Asterisk gets caught in an infinite loop while trying to read the data stream. Thus rendering the system as unusable. Resolution Stricter error checking is now done when iostreams encounters a problem. When an error occurs during reading it is now properly handled, and continued reading is appropriately stopped. Affected Versions Product Release Series Asterisk Open Source 15.x All Releases Corrected In Product Release Asterisk Open Source 15.4.1 Patches SVN URL Revision http://downloads.asterisk.org/pub/security/AST-2018-007-15.diff Asterisk 15 Links https://issues.asterisk.org/jira/browse/ASTERISK-27807 Asterisk Project Security Advisories are posted at http://www.asterisk.org/security This document may be superseded by later versions; if so, the latest version will be posted at http://downloads.digium.com/pub/security/AST-2018-007.pdf and http://downloads.digium.com/pub/security/AST-2018-007.html Revision History Date Editor Revisions Made April 25, 2018 Kevin Harwell Initial Revision June 12, 2018 Kevin Harwell Added CVE Asterisk Project Security Advisory - AST-2018-007 Copyright © 2018 Digium, Inc. All Rights Reserved. Permission is hereby granted to distribute and publish this advisory in its original, unaltered form. _____________________________________________________________________ Asterisk Project Security Advisory - AST-2018-008 Product Asterisk Summary PJSIP endpoint presence disclosure when using ACL Nature of Advisory Unauthorized data disclosure Susceptibility Remote Unauthenticated Sessions Severity Minor Exploits Known No Reported On April 19, 2018 Reported By John Posted On June 11, 2018 Last Updated On June 12, 2018 Advisory Contact Rmudgett AT digium DOT com CVE Name CVE-2018-12227 Description When endpoint specific ACL rules block a SIP request they respond with a 403 forbidden. However, if an endpoint is not identified then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints. Resolution Endpoint specific ACL rules now respond with a 401 challenge which is the same as if an endpoint were not identified. An alternate is to use global ACL rules to avoid the information disclosure. Affected Versions Product Release Series Asterisk Open Source 13.x 13.10.0 and later Asterisk Open Source 14.x All releases Asterisk Open Source 15.x All releases Certified Asterisk 13.18 All releases Certified Asterisk 13.21 All releases Corrected In Product Release Asterisk Open Source 13.21.1, 14.7.7, 15.4.1 Certified Asterisk 13.18-cert4, 13.21-cert2 Patches SVN URL Revision http://downloads.asterisk.org/pub/security/AST-2018-008-13.diff Asterisk 13 http://downloads.asterisk.org/pub/security/AST-2018-008-14.diff Asterisk 14 http://downloads.asterisk.org/pub/security/AST-2018-008-15.diff Asterisk 15 http://downloads.asterisk.org/pub/security/AST-2018-008-13.18.diff Certified Asterisk 13.18 http://downloads.asterisk.org/pub/security/AST-2018-008-13.21.diff Certified Asterisk 13.21 Links https://issues.asterisk.org/jira/browse/ASTERISK-27818 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-2018-008.pdf and http://downloads.digium.com/pub/security/AST-2018-008.html Revision History Date Editor Revisions Made May 1, 2018 Richard Mudgett Initial revision June 11, 2018 Richard Mudgett Added Certified Asterisk 13.21 June 12, 2018 Kevin Harwell Added CVE and issue link =============================================================== + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: cert@support.renater.fr + ===============================================================