Open
Description
openedon Jun 16, 2022
Overshoots the allocated Memory for destination, leads to over-writing other variables in adjacent memory.
File: src\azure\core\az_json_writer.c
API: _az_json_writer_escape_and_copy ( )
Line: 379
Issue: During encoding, if the source contains:
- 2 or more Escape Characters.
- Example: ‘\\’, ‘”’, ‘\b’, ‘\n’, ‘\r’, ‘\t’, etc.
Each character requires 1 additional Byte. - 1 or more Unicode Escape Sequence.
Example: ‘\0’, ‘ACK’, ‘BS’, ‘ESC’, etc.
Each character requires 5 additional Bytes.
Solution :
A condition needs to be added after L:378 that checks for the availability of sufficient Memory Buffer in
remaining_destination
, in every iteration, depending on the type of character ch.
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