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https://issues.apache.org/jira/browse/HBASE-30304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junegunn Choi reassigned HBASE-30304:
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Assignee: Junegunn Choi
> Bytes.toBytesBinary throws StringIndexOutOfBoundsException on truncated \x
> escape
> ---------------------------------------------------------------------------------
>
> Key: HBASE-30304
> URL: https://issues.apache.org/jira/browse/HBASE-30304
> Project: HBase
> Issue Type: Bug
> Reporter: Junegunn Choi
> Assignee: Junegunn Choi
> Priority: Minor
>
> h2. Problem
> {{Bytes.toBytesBinary}} parses {{\xNN}} hex escapes. The guard checks only
> that the {{x}} after a backslash exists ({{in.length() > i + 1}}), then reads
> {{charAt(i + 2)}} and {{charAt(i + 3)}} unconditionally, so a string ending
> in a truncated {{\x}} escape throws {{StringIndexOutOfBoundsException}}.
> {code:java}
> Bytes.toBytesBinary("abc\\x00\\x01\\x"); // throws, reads past end at i + 2
> Bytes.toBytesBinary("abc\\x00\\x01\\x0"); // throws, reads past end at i + 3
> {code}
> HBASE-6518 fixed the trailing bare-backslash case ({{"...\\"}}) with the same
> guard but did not extend it to the two hex digits, so this sub-case remained.
> h2. Fix
> Widen the guard to {{in.length() > i + 3}} so both hex reads are in bounds. A
> truncated tail escape then falls through to the existing bogus-escape path
> and emits the backslash literally. Valid escapes and mid-string bogus escapes
> are unchanged.
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