[asterisk-bugs] [JIRA] (ASTERISK-22910) [patch] - REPLACE() calls strcpy on overlapping memory when <replace-char> is empty

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-22910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-22910:
-----------------------------------

    Target Release Version/s: 12.1.0
    
> [patch] - REPLACE() calls strcpy on overlapping memory when <replace-char> is empty
> -----------------------------------------------------------------------------------
>
>                 Key: ASTERISK-22910
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22910
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Functions/func_strings
>    Affects Versions: 11.6.0, 12.0.0-beta2
>            Reporter: Gareth Palmer
>            Severity: Minor
>      Target Release: 1.8.26.0, 11.8.0, 12.1.0
>
>         Attachments: func_strings.patch
>
>
> When calling REPLACE() with an empty replace-char argument; strcpy is used to overwrite the the matching <find-char>.
> However as the src and dest argument to strcpy must not overlap it causes other parts of the string to be overwritten with adjacent characters and the result is mangled.
> Patch replaces call to strcpy with memmove and adds a test suite case for REPLACE.

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