[asterisk-dev] [Code Review] 4182: core: avoid rasterisk crash due to long identifier

[Mark Michelson]

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I typically take issue with patches like this because it's not actually fixing where the crash is occurring. As you said in the review, it reduces the chance of the bug occurring, but it has not mended the defect.

- Mark Michelson


On Nov. 13, 2014, 8:31 p.m., Scott Griepentrog wrote:
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> (Updated Nov. 13, 2014, 8:31 p.m.)
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> Review request for Asterisk Developers.
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> Repository: Asterisk
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> Description
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> When connecting to the remote console, an identifier string is first provided that consists of hostname/pid/version.  This is parsed by the remote instance in a buffer allocated to only 80 bytes.  It is possible for a combination of very long hostname and very long asterisk version number to be greater than 80 characters, causing the parsing to fall off the end of the allocated memory buffer and potentially crash.
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> This change increases the buffer from 80 to 256 to significantly reduce that possibility.
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> Diffs
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>   /branches/13/main/asterisk.c 427813 
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> Diff: https://reviewboard.asterisk.org/r/4182/diff/
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> Testing
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> It stopped crashing on a repeated test I was running where the atoi of the version # happen to hit the end of the buffer.
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> Thanks,
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> Scott Griepentrog
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