Asterisk Security Team
2018-Jun-11 22:29 UTC
[asterisk-announce] AST-2018-007: Infinite loop when reading iostreams
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 11, 2018 Advisory Contact Kevin Harwell <kharwell AT digium DOT com> CVE Name 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Asterisk Project Security Advisories are posted at http://www.asterisk.org/security This document may be superseded by later versions; if so, the latest version will be posted at http://downloads.digium.com/pub/security/AST-2018-007.pdf and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 Asterisk Project Security Advisory - AST-2018-007 Copyright (c) 2018 Digium, Inc. All Rights Reserved. Permission is hereby granted to distribute and publish this advisory in its original, unaltered form.
Possibly Parallel Threads
- AST-2018-002: Crash when given an invalid SDP media format description
- AST-2018-003: Crash with an invalid SDP fmtp attribute
- AST-2014-005: Remote Crash in PJSIP Channel Driver's Publish/Subscribe Framework
- AST-2014-018: AMI permission escalation through DB dialplan function
- AST-2014-005: Remote Crash in PJSIP Channel Driver's Publish/Subscribe Framework