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https://issues.apache.org/jira/browse/YARN-8207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460255#comment-16460255
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Eric Yang commented on YARN-8207:
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[~Jim_Brennan] Thank you for the review. I made the changes according to your
comments in patch 004. For the last part, fixed array is safer than dynamic
one. The original patch in YARN-7654 was mostly static allocation. I think it
is safer to use static size for args to prevent any chance of stack overflow by
dynamic allocation of large string array. Make_string was suggested by Jason
to improve code readability.
> Docker container launch use popen have risk of shell expansion
> --------------------------------------------------------------
>
> Key: YARN-8207
> URL: https://issues.apache.org/jira/browse/YARN-8207
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn-native-services
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Major
> Attachments: YARN-8207.001.patch, YARN-8207.002.patch,
> YARN-8207.003.patch, YARN-8207.004.patch
>
>
> Container-executor code utilize a string buffer to construct docker run
> command, and pass the string buffer to popen for execution. Popen spawn a
> shell to run the command. Some arguments for docker run are still vulnerable
> to shell expansion. The possible solution is to convert from char * buffer
> to string array for execv to avoid shell expansion.
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