[asterisk-bugs] [JIRA] (ASTERISK-26570) Macro allows an infinite loop of dialplan inclusion resulting in a crash

[Friendly Automation (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=243363#comment-243363 ] 

Friendly Automation commented on ASTERISK-26570:
------------------------------------------------

Change 8930 merged by Jenkins2:
app_macro: Prevent infinite loop in find_matching_priority.

[https://gerrit.asterisk.org/8930|https://gerrit.asterisk.org/8930]

> Macro allows an infinite loop of dialplan inclusion resulting in a crash
> ------------------------------------------------------------------------
>
>                 Key: ASTERISK-26570
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26570
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_macro
>    Affects Versions: 11.22.0, 14.1.1
>         Environment: Note: not tested with 14. Instead, tested with a fairly recent master (bf01ff53f8d93d637981720331405e56f0b3b118), on both my Debian Testing laptoop and a Centos 6 server.
>            Reporter: Tzafrir Cohen
>            Severity: Minor
>         Attachments: backtrace.txt
>
>
> When app_macro considers the dialplan extension to execute, it loops through contexts and fails to protect from an infinite loop. The result may be a crash with over 5700 recursive calls to find_matching_priority() called from macro_exec().
> Reproduce: An Asterisk system with the following dialplan:
> {code}
> [test]
> include => test2
> ; A simplistic recursive scan never gets here
> include => test1
> exten => macro,1,Answer()
>  same => n,Macro(test)
>  same => n,Hangup()
> [test2]
> include => test
> [test1]
> exten => s,1,NoOp(Starting Macro)
> [macro-test]
> include => test
> {code}
> Now call the macro. E.g.:
> {code}
> channel originate Local/macro at test Application Wait 40
> {code}



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